The London Metal Exchange Arbitration Regulations – A practical guide

All arbitrators appointed in LME arbitrations must be drawn from the LME Arbitration Panel (the “Panel”). Panel members are carefully selected by the Directors of the LME and are generally only admitted if they can demonstrate broad practical knowledge based on experience of trading in metals. A legal or arbitration background is now an added requirement for panel membership, though it is not the sole criterion.

This combination of market knowledge and legal expertise is a genuine strength of the LME system for commercial relationships dealing with metal trading. Disputes about pricing, delivery obligations, metal specification or the construction of LME standard terms are best resolved by arbitrators who understand the commercial and operational context, which makes arbitrators from the LME Panel (and the Regulations) a strong option for governing such disputes.

Practitioners should bear in mind, however, that the Panel is deliberately sector-focused and relatively selective in size. In disputes that are primarily legal in character, or which require particular depth of arbitral experience in managing complex procedural issues, the available pool of arbitrators is narrower than under major international institutions such as the LCIA or ICC. This is a factor worth weighing when assessing the suitability of LME arbitration for any particular contractual relationship and bearing in mind when a dispute arises under the Regulations.

The seat of the arbitration is England and Wales.³  The LME Arbitration Regulations are governed by and construed in accordance with English law, and all arbitrations under the Regulations are conducted in accordance with the Arbitration Act 2025 (the “Act”).⁴  Therefore, if the parties wish for a law other than English law to govern the arbitration, they must specify this in the relevant contract.

The arbitration procedural rules have been drawn up under the framework of English law, but the arbitrators can deal with contracts governed by any other laws. The language of all arbitrations is English, with interpreters permitted by the Tribunal for participants and witnesses for whom English is not their main language. Any document not in English must be accompanied by a translation into English together with a note explaining who prepared the translation and their qualifications to do so.

An arbitration is commenced by the Claimant serving a Notice to Arbitrate on the Respondent and simultaneously sending a copy to the Secretary, accompanied by the Registration Fee and Deposit.⁵  The Registration Fee is £5,000 plus VAT (where applicable) at the time of writing, but should be checked before commencing an arbitration. The Deposit is currently £5,000 (no VAT payable) and may be paid by the methods detailed on the LME’s website from time to time.

The Notice to Arbitrate must contain the Claimant’s address for service, a brief statement of the nature and circumstances of the dispute (including a brief description of any relevant contract sufficient to enable the Respondent to identify it), a brief statement of the relief claimed, the Claimant’s proposal as to the number of arbitrators, the Claimant’s nomination of one arbitrator from the Panel, and the name and address of the Respondent.⁶

The Notice to Arbitrate is not valid, and time does not begin to run under the Regulations, until the Registration Fee and Deposit have both been paid and all required information has been supplied to both the Respondent and the Secretary.⁷   The date of receipt by the Respondent of a valid Notice to Arbitrate is deemed to be the date on which the arbitration has commenced. This is key when limitation is at issue and should be taken into account when filing the Notice to Arbitrate, to ensure sufficient time is included for notification and payment, to avoid arguments as to when the limitation period has expired or been missed. Parties should also take into account timing and notices under the Regulations – receipt must be by 5pm to be deemed received on a specific day, which is earlier than other institutional rules where it is typically by midnight. In addition, notices throughout are to the address given for service, which could force a party into serving all documents by post rather than by email, if a party refuses service by email. This could also slow down proceedings so it would be beneficial to ensure email service is included in any notice provisions for contracts or deals utilising the Regulations.

Within 21 days of receipt of the Notice to Arbitrate, the Respondent must serve a Counter Notice on the Claimant (copied to the Secretary), confirming its address for service, its position on the number of arbitrators, and (if relevant) its own nomination of one arbitrator from the Panel.⁸  If the Respondent fails to serve a Counter Notice, the Claimant may apply in writing to the Secretary, who will then proceed with the appointment of the Tribunal.

A particularly distinctive feature of the Regulations is that the default Tribunal shall consist of two arbitrators, unless the parties agree that either one or three arbitrators should be appointed.⁹  A Tribunal of two arbitrators is typically avoided in other institutional rules to avoid a stalemate on decisions. However, under the Regulations, if the Tribunal fails to agree on any issue, either arbitrator or either party may request the Secretary to appoint a third arbitrator.

A request by a party must be made no later than 14 days after Close of Pleadings or by the arbitrators at any time before an award is made.¹⁰  The third arbitrator shall be a lawyer unless both other arbitrators are lawyers. Parties and their advisers should monitor the pleadings timetable carefully to preserve the right to request a third arbitrator if needed, or seek to agree on a sole arbitrator or three arbitrators from the outset if they so wish.

Within 7 days of receipt of the Counter Notice (or of the Claimant’s application where the Respondent has failed to respond), the Secretary will appoint the nominated arbitrators and notify the parties.¹¹  If the Tribunal is to consist of three arbitrators, the two party-appointed arbitrators have a further 7 days to nominate the third (the chairman), failing which the Secretary will make the appointment. The Tribunal is taken to have been appointed on the date the Secretary sends notification to the parties.

Either party may challenge the appointment of an arbitrator within 28 days of appointment (or, if later, within 28 days of becoming aware of the relevant facts and circumstances) on grounds of non-independence, partiality, unfitness or inability to act.¹²  Unless the other party agrees or the arbitrator withdraws within 7 days, the matter is referred to the Panel Committee for determination.

All arbitrators, whether or not nominated by the parties, must remain wholly independent and impartial at all times and must not act as advocates for the appointing party.¹³

The Tribunal’s case management powers are wide-ranging.¹⁴  Indeed, the Regulations are clear that the Tribunal “…shall have the widest discretion permitted by law to determine the procedure to be adopted, and to ensure the just, expeditious, economical and final determination of the dispute.”

For example, the Tribunal may on its own motion or on the application of either party: order either party to take specified steps within a specified time, extend or abridge any time limits, continue the reference in default of a party’s appearance or compliance (including by striking out submissions and making consequential awards), permit amendments to submissions at any time, stay proceedings in favour of court proceedings, order document production, order interrogatories, require the parties to provide written statements of their cases on particular issues, order the inspection, preservation or sale of property, make interim payments, order security for the amount in dispute or for costs, order specific performance of any contract, and open up, revise and review any certificate, opinion or decision subject to the arbitration. The explicit reference to the ability to exercise these powers (which are inclusive, rather than limiting, to those provided under the Regulations and at law) gives the parties to an LME arbitration important clarity on what the Tribunal may order and may reduce the likelihood of parallel court proceedings for issues such as certain interim measures. The Tribunal should take into account the expedience and expense of the dispute when making its decisions.

The Tribunal may also appoint its own investigators or experts to report on specified issues,¹⁵  which is particularly relevant in metals disputes where technical questions of specification, sampling or methodology may be at issue.

The Tribunal has the power to rule on its own jurisdiction, including objections to the existence or validity of the arbitration agreement.¹⁶  A jurisdictional challenge must be raised no later than in the points of defence. A challenge that the Tribunal is exceeding the scope of its authority must be raised promptly once the Tribunal has indicated its intention to decide on the matter in question.

The Regulations follow the well-established principle of separability, whereby a decision that the underlying contract is null and void does not automatically invalidate the arbitration clause.

Claims are allocated by monetary value under the Short Procedure (Part F), Expedited Procedure (Part G) and Full Procedure (Parts F and G). 

The three tier structure allows procedures to be proportionately tailored to the value and complexity of the dispute. By allocating disputes into clear value bands, the ICE Arbitration Procedure avoids the unnecessary cost and delay associated with a one‑size‑fits‑all approach or the debate over the length of timetable and appropriate submissions depending on each parties’ view of how long the proceeding should take or how complex the issues are.⁸ 

The Special Procedure for Experts (Part H)⁹ also deals with disputes where technical expertise dominates the issues. 

 A) The Short Procedure:

The Short Procedure (Part F) may apply to claims not exceeding £50,000 (Band A)¹⁰ and offers a highly streamlined process characterised by limited written submissions, restricted evidence and a compressed timetable (e.g. the statement of case file must be submitted within 2 working days of appointment of the arbitrator and a statement of reply file must be submitted within 14 days of receipt of the statement of case). No counterclaims may be filed, but either party may respond to the opponent's file, or amend their own, within 14 days of the statement of reply being filed. No hearing shall be held unless the Arbitrator gives permission and only if the requesting party bears all of the costs incurred resulting from the hearing. 

B) The Expedited Procedure:

The Expedited Procedure (Part G) may apply to claims above £50,000 and not exceeding £250,000 (Band B).¹¹ It emphasises early case management to ensure proportionality and a timetable of no longer than 100 days from service of the statement of claim or from the date on which the Arbitrator gives directions on the procedural timetable, whichever is later, up to costs submissions. Key features include targeted disclosure, controlled use of factual and expert evidence (including the option for the Arbitrator to question witnesses himself and to require multiple witnesses to give evidence concurrently) and a hearing of no more than five days or final written submissions in the alternative to a hearing. The 100-day period may only be extended upon agreement by the parties but the Arbitrator may not otherwise extend the period. This prevents a party from using delaying tactics and dragging out what is intended to be a time-and-cost-efficient process. However, it does allow flexibility in the event of genuine timing concerns or unexpected complexity.

C) The Full Procedure:

The Full Procedure (Parts F and G) may apply to claims over £250,000 (Band C)¹² and provides the most comprehensive process. It allows for full submissions, broader disclosure, extensive witness and expert evidence and a traditional hearing structure with cross‑examination and is appropriate for large, technically complex disputes. The Arbitrator and parties are not restricted by set timelines for the procedural timetable and have the power to determine appropriate timings for each phase. This allows the parties significant commercial flexibility but there is a risk that the timetable may “get away from” the parties and allow for time wasting tactics. Setting a detailed timetable early in the proceedings will be key to ensure that the timetable is not unreasonably extended.

For disputes where technical expertise dominates the issues, the Special Procedure for Experts (Part H)¹³ enables the Arbitrator to adopt an expert‑centric approach. This Procedure allows for site visits and provides for a meeting between the Arbitrator and experts to allow the experts to present their opinions and for the Arbitrator to question the experts. Counsel are not entitled to question the experts, and no other hearings or meetings are provided for. This makes it particularly suitable for disputes turning on specialist engineering questions and especially useful during live projects where quick, technically grounded decisions are needed rather than lengthy and detailed legal submissions.  

This is reflected in the fact that the parties will not be entitled to costs for legal representation under this Procedure unless otherwise agreed.

Expert evidence may be permitted under the other procedures, subject strictly to the Arbitrator's permission.

Confidentiality in LME arbitrations is strongly protected. Settling disputes by LME arbitration ensures confidentiality with very limited exceptions. Unless the parties agree otherwise in writing, the parties, the Tribunal, the Secretary and the Panel Committee are all required to keep the award, and all submissions, documents and information introduced into the proceedings that are not otherwise in the public domain, confidential in perpetuity.¹⁷  The only exception is where disclosure is required by legal duty or to protect a legal right. There is also no obligation to keep the fact of the arbitration confidential, so this may need to be agreed up front if the parties so wish (either in the contract documents or by agreement otherwise).

This is a more stringent regime than that which applies under some institutional rules. For example, under the ICC Rules awards shall be published unless the parties opt out. For parties to sensitive commercial or pricing disputes in the metals market, the LME’s perpetual confidentiality obligation is a useful feature.

The Regulations contain a consolidation mechanism, administered by the Panel Committee.¹⁸  On the appointment of a Tribunal, and whenever requested by either party, the Panel Committee must review pending arbitrations and may (on application by one or more parties, and after consultation with the Tribunals and parties) direct consolidation on such terms as it considers just, direct simultaneous or consecutive hearings, or order a stay of one or more arbitrations pending determination of another.

The Panel Committee has issued Guidance Notes on applications for consolidation (the Consolidation Guidance),¹⁹  which provides important practical direction on a number of points.

First, an application for consolidation cannot be made until a Tribunal has been appointed in each relevant arbitration. Where claims arise out of two or more related contracts, this means that separate Notices to Arbitrate must initially be served for each contract, even where consolidation is the ultimate intention. Claimants who resist commencing separate arbitrations in the hope of a single consolidated proceeding risk procedural delay and complication.

Second, the Panel Committee recommends that where consolidation is anticipated, the initial notices and counter notices should be kept as short as possible and should avoid combining claims across contracts. Points of Claim should not be served with the initial Notice to Arbitrate where consolidation is in prospect. Immediately following appointment of each Tribunal, an application for consolidation should be made to the Panel Committee, and requests for extensions of the timetable for Points of Claim and Points of Defence should be made to each Tribunal at the same time.

Third, the Panel Committee has power, in lieu of full consolidation, to direct that separate arbitrations be heard at the same time or consecutively. This may be the appropriate approach where there are two or more respondents, since full consolidation in a multi-respondent scenario could create enforcement and costs issues.

It is worth noting that the Regulations do not contain a joinder mechanism, and therefore parties anticipating multi-party disputes should bear this in mind at the contract drafting stage. Where a third party needs to be brought into a dispute, the only route available under the Regulations is to commence a separate arbitration against that party and then apply to the Panel Committee for consolidation, provided the criteria under Regulation 11.1 are met.²⁰

Each party has the right to be heard before the Tribunal, unless the parties have agreed that the case be decided on the papers.²¹  All meetings and hearings take place in England and Wales unless both parties agree to a hearing elsewhere. The Tribunal may also direct that hearings be conducted remotely, provided each participant can clearly hear, speak to and (if directed) see every other participant. This gives useful flexibility for parties with witnesses or representatives in different jurisdictions (particularly if there are visa issues).

In advance of hearings, the Tribunal may submit to the parties a list of questions it wishes them to address with special attention.

One of the most noteworthy procedural features of the LME Arbitration Regulations is the position on legal representation. Neither party may be represented at any hearing by a legal practitioner without the consent of the Tribunal, and such consent must be requested no later than Close of Pleadings.²² If the Tribunal grants consent to one party, the other party automatically acquires an equivalent right. Either party may seek legal advice at any stage without restriction.

In practice, the restriction on legal representation at hearings is a common feature of commodity trade arbitration more broadly, in all but the simplest disputes, and lawyers are frequently instructed and involved behind the scenes in the preparation of submissions even where formal consent to appear has not been sought. However, the requirement to apply for consent (and to do so by Close of Pleadings) is a procedural step that practitioners must not overlook. Failure to apply in time could result in an unnecessary and entirely avoidable procedural dispute at the hearing stage should a party arrive with legal representation but has not had consent granted for their involvement at the hearing.

The procedure and timetable for submissions is set out in the Regulations and shall be followed unless otherwise ordered by the Tribunal. Following appointment of the Tribunal:

• The Claimant has 21 days to submit its point of claim

• The Respondent then has 21 days to submit its points of defence and any counterclaim

• The Claimant has 21 days from receipt of the points of defence to submit its points of reply, and

• Finally, if the points of reply includes a defence to any counterclaims, then the Respondent may submit its points of reply to the defence to any counterclaims within 21 days from receipt of the points of reply

No further submissions are permitted without permission of the Tribunal and the submissions must be accompanied by documents relied upon and any samples. This is a very quick timetable for exchange of submissions, which allows the parties to move through any disputes efficiently and in a cost-effective manner. However, arbitration practitioners should bear in mind the speed of proceedings and does not explicitly provide for expert and witness evidence to be submitted alongside submissions.

Before any hearing, the Tribunal may require either party to give notice of the identity and qualifications of witnesses it intends to call and may require the parties to exchange witness statements in advance.²³  Therefore, parties may not be able to submit witness evidence (whether fact or expert) prior to submissions being closed. The Tribunal has broad discretion to allow, refuse or limit the appearance of witnesses, whether of fact or expert witnesses.

Witness evidence may be presented in written form (as a signed statement or sworn affidavit), and the Tribunal may allow or require oral examination of any such witness. If a witness who has provided a written statement fails to attend for oral examination, the Tribunal may place such weight on the written evidence as it thinks fit or exclude it altogether.

Given the nature of metals disputes (which frequently involve pricing methodology, delivery logistics and market practice) expert evidence will often be necessary and significant. The Tribunal also has express power to appoint one or more investigators or experts to report to it on specified issues, in addition to or instead of expert evidence called by the parties. This is a power worth being aware of, particularly in technically complex disputes where the Tribunal may wish to supplement the parties’ expert evidence with independent input or, given the short timetable, in lieu of party appointed experts. Respondents will need to be particularly live to this as Claimant parties will have longer to prepare for any dispute before submitting a Notice to Arbitrate.

The Tribunal must make its award in writing and give reasons.²⁴  Awards may be expressed in any currency claimed in the arbitration²⁵  and the Tribunal may make separate final awards on different issues at different times.²⁶  In the event of a settlement, the Tribunal may make a consent award recording the settlement if either party so requests. All of these factors are useful for enforcement.

Where the Tribunal consists of two arbitrators and they fail to agree, a third arbitrator must be appointed. Where the Tribunal consists of three arbitrators, decisions are by majority. A dissenting arbitrator may include reasons for their dissent in the award at their own discretion.²⁷

The award must state the date by which payment must be made for any sum due. In addition to the statutory power to award interest, the Tribunal has power to award interest at such rate and for such period as it considers fit on any sum from its due date up to the commencement of the arbitration.²⁸  It is key to note that in the event of the award not being taken up by either party within a period of 28 days from the notification that it is available or such longer period as the Tribunal and Secretary may agree then the Deposit shall be forfeit and the sum may be used to fund sums due to the LME and then any Fees due. Thereafter, the LME may call on the parties to either take up the Award or pay any outstanding Costs.

LME awards are not subject to institutional scrutiny before publication, unlike ICC awards which are reviewed by the ICC Court. This means awards can be issued and taken up swiftly. Practitioners should however be aware that the absence of any institutional review mechanism means there is no quality-control check on the form or reasoning of an award before it is released, and parties should engage actively with their appointed arbitrators throughout the process.

Once taken up by one of the parties, every award is final and binding.²⁹  Unless the parties otherwise agree in writing, they irrevocably waive any right to any form of appeal, review or recourse to any state court or other legal authority, insofar as such waiver is not prohibited by applicable law. This is a broad waiver of appeal rights and represents a significant commitment to finality. Parties should give careful consideration to this provision, particularly where the dispute involves complex legal issues on which they may otherwise wish to preserve a right of challenge under section 69 of the Arbitration Act 2025.

If the Tribunal considers that the award contains points of significant importance or interest to LME members, it may communicate those points to the LME’s Legal Department, which will determine (in consultation with the Tribunal) whether and how to bring them to members’ attention, while maintaining the confidentiality of the parties.

The broad waiver of appeal rights under Regulation 12.8 is a significant feature of LME arbitration. Parties entering into contracts incorporating the LME Arbitration Regulations should ensure they are fully aware of this provision and its implications, particularly in relation to complex legal disputes where an error of law in the award might otherwise be amenable to challenge under section 69 of the Act.

The Tribunal has full power to specify the amount of the costs of the arbitration in the award and to determine the proportions in which they are borne by the parties.³⁰  The costs of the arbitration include the Tribunal’s own remuneration and any costs relating to the conduct of the proceedings incurred by the Tribunal, the LME, or any investigator or expert appointed.

Importantly, the Tribunal may (on its own direction and not later than 14 days after the date for receipt of points of reply) cap the recoverable costs of the arbitration or any part of the proceedings it may order to be paid.³¹  This is a useful proportionality tool and is worth raising proactively with the Tribunal in appropriate cases, particularly where one party has significantly higher costs than the other or if one party has unnecessarily drawn out proceedings, raised vexatious applications or otherwise caused cost increases unreasonably.

If an arbitration is abandoned, suspended, stayed or concluded before a final award is made, the parties are jointly and severally liable for the costs of the arbitration as determined by the Tribunal, which retains jurisdiction for that purpose.

Once taken up by a party, an LME award is final and binding, subject only to the limited challenge grounds available under the Arbitration Act 2025³²  and subject to any exclusion of those rights that the parties have agreed in advance.

Unlike other institutional rules, the LME Arbitration Regulations do not contain an express slip rule or correction mechanism. Parties wishing to correct a clerical mistake or error arising from an accidental slip or omission, or to clarify or remove any ambiguity in an award, will need to rely on section 57 of the Act, which permits the Tribunal to correct an award or make an additional award on its own initiative or on the application of a party. Any application under section 57 must be made within 28 days of the date of the award (or such longer period as the parties may agree).

Parties should also be aware that the broad waiver of appeal rights in Regulation 12.8 (discussed above under Awards) operates alongside the statutory framework. Where the parties have not excluded their rights under the Act, the usual challenge and appeal routes remain available, including applications to challenge an award for serious irregularity under section 68 and, where not excluded, appeals on a question of law under section 69. Given the breadth of the Regulation 12.8 waiver, parties should take advice at the contract-drafting stage on the extent to which they wish to preserve or exclude these rights.

LME awards are fully enforceable, including internationally under the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards, provided the formal validity requirements are met. They therefore carry the same legal weight as awards issued under more prescriptive institutional rules.

A distinctive feature of LME arbitration, not found in most institutional rules, is the default notice process. Applying to agreements entered into on or after 1 June 2010, this mechanism applies where at least one party is a Category 1, 2 or 4 Member of the LME.³³  It encompasses disputes relating to LME registered contracts, but is not limited to disputes relating to contracts in the physical metals industry or general commercial contracts. The other party need not be an LME member, and the mechanism applies where a Category 1, 2 or 4 Member contracts with "any other person" who agrees to LME arbitration.

Where the date for payment under an award has passed, the period for any appeal under English law has elapsed, and the party against whom the award was made has failed to pay, the successful party may apply to the Secretary to communicate that failure to Members. The Secretary acknowledges receipt and copies the notice to the other party. The LME will allow a further 14 days for payment to be made. If full payment is not confirmed by both parties within those 14 days, the Secretary will circulate the notice of default to LME Members. If payment is subsequently made in full, a further notice confirming this is circulated.

This mechanism adds a significant reputational dimension to LME arbitration enforcement that is unique to the Exchange context. For parties whose counterparties are LME members, it provides a meaningful additional lever beyond the formal enforcement mechanisms available through the English courts and the New York Convention. Practitioners should ensure their clients are aware of this process and that award debtor parties understand the timeline and consequences (including to reputation) clearly.