Some Mothers Do 'Ave 'Em (1973)

Season 3: Episode 6

Frank is takeing elocution lessons so that he'll be able to communicate with all of the ""upper crust types"" he thinks he'll meet when he starts taking flying lessons. Frank has to go to Australia House to discuss his emigration application. The emigration officer, Mr Lawrence, finally approves Frank's application in order to get rid of him. Frank has put a card in a shop window advertising his services as a gas fitter. He gets a phone call asking him to look at a gas boiler. He goes round and blows up the cutomer's house.