It's 1976 and being an uncultured colonial Air Force officer I arrived on the doorstep with a fellow officer after our long flight[s] from Malaysia [via Bangkok/Karachi/Bahrain] in our travelling clothes at 9am on a sunny Wednesday after being driven around London for an hour from Victoria Station [Q. cab driver; "have you been to London before?" A: "No!"].
Upon arriving at the club entrance we were both frog marched into the Secretary's office and dressed down for not dressing up! Well I thought then that one must bathe in a three piece suit not your birthday suite as is the fashion in the Antipodes.
Great stay....
