Arthur Daley was a character in the UK TV series "Minder" and the name has become synomynous in Britain with a wheeler dealer. Daley is a lovable rogue, very much perceived as a hero, someone getting away with foiling the system. Daley would align himself with Margaret Thatcher, seeing himself as the prime example of the self-made/self reliant man that Thatcher advocated in the 1980s.
The role of Arthur daley was played with aplomb by George Cole between 1979-1993.
Arthur covers for her, pretending that he was shopping with her and forgot to pay for the item.
The shot of the two of them, sitting in the hospital room (which Arthur has redecorated so it looks like an upscale gentleman's club) wearing silly cowboy hats and trying not to grin, is one of the most memorable moments in the film.
At one point, when it looks like Arthur is really going to marry Susan after all, Arthur offers her money to quit her job and go to acting school, but she refuses him.