Leslie Phillips spoke out against this film after is was released, as he said it had been completely changed from the story he and the other elderly actors were making about an old people's home, in order to concentrate on the relationship between Michael Caine and the boy.
Some think the father's mustache at the party is a continuity error as he shaved it off that morning. However, it is a fancy dress party and the father is clearly wearing a fake mustache to go with his costume.
Lilian: Canada's a country, and my big God-bothering girl Mavis is coming from there to see me, today. With her husband who's got a plate in her head. Of course she's not a girl now, little man. She's 66 years old.