Where a contract is specifically terminated, for example under a contractual clause or at common law (ie repudiation), such termination operates prospectively and both parties are discharged from any further performance under the contract of their primary obligations (eg payment or carrying out remedial works). See, for example, Photo Production Ltd v SecuricorTransport Ltd. This is different to the position whereby a contract is effectively completed because all of the parties’ primary obligations have been satisfied. They are, however, still enforceable in the future, if required. Under some contracts, a party’s obligations may be considered ‘closed’ ie all primary obligations or matters relating to it are deemed to have been completed/concluded with nothing outstanding or open to challenge. As set out below, this is normally achieved in JCT contracts by the issuance of the final certificate or statement. The practical completion certificate or certificate of making good defects may also have this effect, but to a more limited