United Utilities Water Limited v Northstone (NI) Limited (trading as Farrans Construction)

Part 8 proceedings are unsuitable where the validity and interpretation of contractual payment notices depend materially on disputed or incomplete factual evidence. The court must assess how a reasonable recipient, possessing the relevant knowledge of the actual parties and their contractual setting, would have understood the notice. The relevant factual matrix may include the original contract, later amendments, the reasons for those amendments and the parties’ established administrative practice. Where the evidence does not permit that assessment, the court should decline to determine the substantive validity of the notices under Part 8. Related issues dependent on that determination should likewise remain unresolved.

United Utilities sought summary judgment to enforce an adjudication award requiring Northstone to pay £3,269,328.05 plus VAT and associated sums. Northstone brought connected Part 8 proceedings seeking declarations that the payment notice was invalid or that no pay less notice was required.

The dispute concerned a payment notice issued through CEMAR under an amended NEC3 contract. The parties disagreed about the effect of an incorrect automatically generated date, the meaning of a negative amount stated in the notice and the contractual and statutory payment regime. The central question was whether those issues could properly be determined summarily on the evidence available.

1. Part 8 procedure. The court held that the two issues identified by Northstone were not suitable for determination under Part 8. The question was not confined to the wording of the contract and the Housing Grants, Construction and Regeneration Act 1996. It required an assessment of how a reasonable recipient, circumstanced as the actual parties were, would have understood the notices.
2. Relevant factual matrix. The parties were sophisticated and experienced. The reasons for, and effect of, the contractual amendments were central to interpreting the notices. So too were the parties’ understanding of CEMAR, the operation of the accelerated payment regime and the fact that automatically generated dates did not reflect the amended terms.
3. Insufficient evidence. Northstone had not provided sufficient evidence concerning the original contract, the amendments, the parties’ understanding of CEMAR or the procedure used after the amendments. That evidential deficiency prevented the court from determining the notices’ meaning and validity.
4. Consequential issue. It was also inappropriate to determine whether Northstone was obliged to issue a pay less notice, since that issue might be affected by findings made on the validity of the payment notice.
5. Disposition. Summary judgment was granted to United Utilities for £3,269,328.05 plus VAT, adjudicator-awarded interest, adjudicator’s fees of £62,254.69 plus VAT, and interest at 8.1% from 3 April 2025.