Escrow, Bonds and Contract Formation: Procedural Traps from GMC v Sumitomo
The Technology and Construction Court’s decision in GMC Utilities Group Ltd v Sumitomo Electric Industries Ltd [2026] EWHC 885 (TCC) provides a sharp reminder that, in construction disputes, outcomes can turn not on the merits of delay or entitlement, but on strict compliance with procedural mechanisms agreed between the parties. The case is a useful illustration of how escrow arrangements are used in practice to manage risk around performance bond calls, and how seemingly neutral mechanisms can carry significant strategic consequences.
Background
The dispute arose out of a significant infrastructure project involving the construction of an electricity interconnector between the United Kingdom and Ireland. Sumitomo Electric Industries Ltd was engaged as the main contractor for the delivery of an undersea electricity cable linking Pembrokeshire in Wales to Wexford in Ireland, forming part of a cross-border transmission system designed to connect the two national grids. The works in issue did not concern the offshore installation itself, but rather the associated onshore cable works forming part of that wider scheme, which had been subcontracted to GMC Utilities Group Ltd.
The Performance Bond and Escrow Arrangement
At its core, the dispute arose out of a subcontract under which GMC Utilities Group Ltd carried out onshore cable works for Sumitomo Electric Industries Ltd. Following delays to completion, SEI asserted an entitlement to delay damages and proceeded to make a demand under a performance bond in the sum of approximately €3.9 million. As is typical with on-demand bonds, that demand would ordinarily have resulted in immediate payment by the issuer, leaving GMC to pursue recovery later if it disputed liability.
Faced with that position, GMC sought to alter the commercial landscape. Rather than resist the bond call outright, it proposed that the same sum be paid into an escrow account pending resolution of the underlying dispute. That proposal was accepted by SEI, and the parties recorded their agreement in a letter dated 8 November 2024. The structure was straightforward. GMC would pay €3.9 million into escrow, SEI would refrain from enforcing the bond, and the funds would be released depending on the outcome of the parties’ respective claims for extension of time and delay damages.
However, the agreement also contained a critical qualification. If, by 7 March 2025, there had been no agreement between the parties, no adjudicator’s decision, and no commencement of court or arbitral proceedings, the escrow sum would be paid to SEI. In other words, the arrangement included a “long-stop” date which effectively placed the burden on GMC to take positive steps within a defined period or risk losing the money automatically.
The Formal Escrow Agreement
The parties subsequently entered into a formal escrow agreement in December 2024 governing the administration of the escrow account. That agreement set out the mechanics by which the escrow agent would hold and release the funds, but it did not replicate the long-stop provision contained in the earlier letter. This gave rise to a dispute as to whether the 8 November letter was legally binding and, if so, whether its terms continued to operate alongside the later escrow agreement.
Was the 8 November Letter Legally Binding?
GMC argued that no binding agreement had been concluded on 8 November 2024, on the basis that earlier negotiations had been conducted “subject to contract” and that the parties only intended to be bound once the formal escrow agreement was executed. Alternatively, it contended that the escrow agreement constituted the entire agreement between the parties, displacing any prior arrangement.
The Court rejected those arguments. Applying the established principles on contract formation, including those set out in RTS Flexible Systems Ltd v Müller [2010] UKSC 14, the Court held that the 8 November letter was a binding agreement. Although negotiations had initially been conducted on a “subject to contract” basis, that qualification had been waived. The language of acceptance, the absence of any continuing “subject to contract” wording, and the parties’ subsequent conduct, including SEI’s communication with the bond issuer, all pointed to an intention to create legal relations at that point.
The Court also rejected the suggestion that the 8 November agreement was an unenforceable “agreement to agree”. The essential obligations were sufficiently certain, even though the detailed escrow arrangements were to be finalised later. The subsequent escrow agreement did not supersede the earlier agreement; rather, it operated alongside it. The earlier agreement addressed the parties’ substantive rights as between themselves, whereas the escrow agreement dealt with the administrative mechanism by which the funds would be held and released. This distinction proved important.
Did GMC Comply with the Long-Stop Condition?
The central issue then became whether GMC had complied with the condition in the 8 November agreement requiring action by 7 March 2025. GMC had issued Part 7 proceedings in the High Court on 5 March 2025, two days before the deadline. SEI argued that this was insufficient, on the basis that the subcontract contained an arbitration clause and that only arbitral proceedings could satisfy the requirement.
Again, the Court rejected SEI’s position. On a proper construction of the clause, the requirement was satisfied by the commencement of “court or arbitral proceedings”. The parties had chosen that language and were entitled to do so. The fact that the underlying dispute was, under the subcontract, subject to arbitration did not alter the position. The Court emphasised that proceedings validly commenced in court remain effective for these purposes, even if they are subsequently stayed under section 9 of the Arbitration Act 1996. A stay does not render proceedings void; it simply suspends them. Accordingly, GMC had met the contractual condition by issuing proceedings before the deadline.
The Court’s Decision
The consequence was that the escrow sum did not fall to be paid automatically to SEI. Instead, it remained in the escrow account pending determination of the underlying dispute, which the Court held should proceed to arbitration in accordance with the subcontract. SEI’s application for a declaration that it was entitled to the funds therefore failed.
Key Takeaways
From a practical perspective, the decision highlights several points of importance for those operating in the construction industry.
- Moving away from “subject to contract”
Parties should be cautious when moving away from a “subject to contract” footing. The Court will look at the objective evidence of what was said and done, and it will not hesitate to find that a binding agreement has been concluded where the language and conduct support that conclusion.
- Escrow arrangements require careful drafting
Escrow arrangements are not merely neutral holding mechanisms. While they are often presented as a commercially sensible compromise in the face of a bond call, their effect depends entirely on the conditions governing release of the funds. A long-stop provision, such as the one in this case, can operate as a powerful lever. It may allow a party to secure payment without ever establishing substantive entitlement, provided the counterparty fails to comply with procedural requirements.
- Trigger events matter
The drafting of trigger events is critical. The phrase “commencement of proceedings” may appear straightforward, but as this case demonstrates, it can have significant consequences. If parties intend that only arbitration will suffice, that should be stated clearly. Absent such clarity, the Court will give effect to the natural meaning of the words used.
- Different contractual documents may serve different purposes
The case also serves as a reminder that different contractual documents may serve different functions. An escrow agreement may regulate the mechanics of holding and releasing funds without determining the parties’ underlying rights. Unless the drafting makes it clear that earlier agreements are superseded, those earlier arrangements may continue to have operative effect.
In commercial terms, the decision reflects a familiar reality. Disputes are often managed not only through substantive legal arguments, but through carefully structured procedural mechanisms. In this instance, GMC avoided an immediate €3.9 million loss by proposing escrow and, crucially, by taking timely action before the contractual deadline. Had it failed to do so, the outcome would have been very different.
How CCC Can Help
CCC provides practical support in navigating mechanisms such as performance bonds and escrow arrangements. Cases like this highlight the importance of clear drafting and timely action, and CCC assists clients in identifying and managing these risks before they escalate into costly disputes.


