The main characters' names "Hannah" and "Annie" are etymologically the same name.
The only film by Mike Leigh that Roger Ebert had not given four out of four stars.
The fictional Harbour building where the girls visit Mr Evans is an apartment block located north west side of Isle of Dogs, at the top of Westferry Road and called Anchorage Point.
The fictional Harbour building in real life is called Anchorage Point. Apartment number 80 is the penthouse duplex on the top floor once rented by ex TV entertainment celebrity Michael Barrymore.
Contrary to popular belief, Lynda Steadman (who plays Annie) is not related to Alison Steadman (who at the time of filming was married to this film's director Mike Leigh). The surname is just a coincidence.