BBC Play of the Month (1965) : 5x2

Charley and Jack pressure classmate Fancourt to pose as Charley's aunt Donna Lucia. Their purpose is to have a chaperone for their amorous visits with Amy and Kitty, niece and ward of crusty Stephen Spettigue. Complications begin when Fancourt, in drag, becomes the love object of not only old Spettigue but also Jack's grandfather.