ROCK ADVERTISING LTD v MWB BUSINESS EXCHANGE CENTRES LTD
[2018] BLR Plus 35
SUPREME COURT
Before Lady Hale, President, Lord Wilson, Lord Sumption, Lord Lloyd-Jones, and Lord Briggs
"No oral modification" clauses - Whether legally effective - Whether "no oral modification" clauses can be varied orally - Whether intention to vary a "no oral modification" clause is implied from an attempted oral variation of substantive obligations - Analogy with "entire agreement" clauses - Estoppel