In 1997 the Ministry of Defence employed Devonport Royal Dockyard (DML) as main contractor for the upgrading of a dockyard. In turn, DML employed Carillion to upgrade the number nine dock, and provide new buildings and associated infrastructure. That contract was contained in two documents, a subcontract and an alliance agreement both dated 10 March 2000. Carillion was to be paid its actual cost plus accruals and a fee. A gain share agreement provided that any overspend of the target cost would be shared between DML and Carillion. The target cost was originally £56m, but was amended six times between September 2000 and December 2001 to a target cost of £100m. A meeting of the alliance board (a board comprising two representatives of the parties with the power of authority to make decisions) met on 30 October 2001 with a view to revising the payment provisions. Carillion believed that a binding oral agreement had been reached at that meeting whereby payment was to be on a cost-reimbursable basis without the gain share restrictions. However, the amount of the fee could not be agreed. Carillion submitted application number 33 on 16 April 2002 to DML for achieving milestone 33. Carillion claimed £121m less the previous certified sum of £110 million. The sum was not paid, but there was an exchange of correspondence in respect of the calculation of the figure and the basis of the figure. This culminated in a letter from Carillion dated 25 July 2002 stating that the basis of their claim was the oral agreement reached on 30 October 2001. By further letters dated 26 and 29 July 2002 Carillion threatened adjudication proceedings. By letter dated 1 August 2002, DML wrote to Carillion stating that this was the first time that Carillion had sought to rely on an agreement reached on 30 October 2001, and DML asked for more detailed information in respect of that agreement. Carillion responded with a notice of intention to refer the dispute to adjudication dated 6 August 2001. An adjudicator was appointed on 12 August 2002. His decision dated 24 September 2002 decided that a binding agreement was concluded on 30 October 2001, the project would become cost reimbursable and that DML should pay £7m plus VAT within 18 days together with fees.
DML did not pay. It claimed that the adjudicator did not have jurisdiction for two reasons. First, the alleged oral agreement did not comply with the requirements of section 107 of the act insofar as it was not in writing. This was irrespective of whether or not an oral agreement was in fact reached. Second, that a dispute had not crystallised between the parties as DML had not rejected Carillion's allegation that there was an oral agreement, but had merely requested further information.