Commercial analysis: Anheuser-Busch International Inc v Commonwealth Brewery Ltd was an appeal to the Privy Council about whether three-and-a-half months’ notice was a reasonable period when terminating a long-running distributorship. The Board reviewed a range of authorities from commonwealth countries dealing with the law on implied terms requiring reasonable notice when ending commercial relationships of indefinite duration. The Board confirmed that reasonable notice helps enables an orderly winding-up of the relationship being terminated and allows the recipient of a notice of termination to make substantial progress towards alternative arrangements; it is not to preserve the recipient of notice’s profit stream or ensure the recipient has enough time to fully replace the lost business. The judgment provides a helpful overview of factors that are relevant to the assessment of what period is ‘reasonable’, including business dependence, dedicated resources, extraordinary sunk expenditure, third-party commitments and the difficulties created by continued performance during the notice period. The judgment will be of interest to practitioners handling disputes surrounding termination of distribution, agency, brokerage and supply agreements and whether reasonable notice needs to be given (and how long that ought to be in the circumstances). Written by Lucas Gregory, barrister at St John’s Buildings.