In what Cleese said was his favourite episode, The Kipper and the Corpse, Basil tries to prevent Mrs and Mrs White, a Welsh couple, from seeing the body of a dead guest he has hidden in their wardrobe.
Cleese laughed recalling the scene.
“Mr and Mrs White, they were terrific, and then we had that little joke in there about a Welsh restaurant called ‘Leek House.’ A terrible, terrible joke that nobody noticed,” he told Lucy Owen on BBC Radio Wales.
Cleese also said director John Howard Davies, who was born in London to Welsh parents, was “enormously important” to the show’s success.
Davies, who had previously directed the first six episodes of Monty Python, also directed the first series of Fawlty Towers.