Contractual variation clause was ambiguous

In Integral Petroleum SA v Bank GPB International SA [2022] EWHC 659 (Comm) the High Court had to consider whether a variation clause in a facility agreement prohibited oral modifications but found that the specific clause was ambiguous as to its effect.

Anti-oral variation clauses

Many contracts will contain a clause stating that the contract can only be varied by written agreement between the parties. This is an attempt to provide certainty and avoid future disputes as to what was or wasn't agreed between the parties.