 While a Lord of Appeal in Ordinary he contributed to a number of significant cases.Three cases of particular importance are Boardman v Phipps [1967] 2 AC 46 (giving a powerful dissent), Vandervell v IRC [1967] 2 AC 291 (where he gave a majority speech) and In re Gulbenkian's Settlements [1970] AC 508.An interesting problem arose on Lord Upjohn's death.