The location on Danebury Avenue, Roehampton, used as the titular 'OK Launderette' is still as of 2020 a launderette.
Terry (Dennis Waterman) breaks the fourth wall in this pilot episode when he hears the gang realise the irony of using the moniker of 'Independent Rastafarian Army' (IRA) - he laughs and looks at the camera/audience.
First appearance of Chisholm, played by Patrick Malahide. He appeared in 24 episodes. The last one being An Officer and a Car Salesman (1988). Patrick Malahide later appeared with Dennis Waterman in Diamond Geezers (2006)
Leslie Grantham has an uncredited role as '2nd Policeman'. This was his first TV appearance. He went on to find fame playing Den Watts in EastEnders (1985) from 1985-1989 and 2003-2005.
Lynda Baron has an uncredited role as a Barmaid. She later appeared in You Lose Some, You Win Some (1980) as Sadie. She is best known for playing Nurse Gladys Emmanuel in Open All Hours (1976) from 1976-1985 and in Still Open All Hours (2013) from 2013-2016.