After our honest, wholesome repast (gulls' eggs, potted shrimps and grilled plaice), we then tottered across Berkeley Square, Partagas Shorts clamped in our jaws, to Jack Barclay to survey the Bentley and Rolls-Royce motor cars on offer. Ever since I test-drove the new convertible Corniche, I have hankered after one, albeit one from the Seventies.