The critics seem not to agree with you about the merits of the film, with both Peter Bradshaw in The Guardian and Simran Hans in The Observer only awarding it two stars, as did Kevin Maher in The Times.
However it looks like the sort of movie I might enjoy if it ever comes up on the box (or if, say, I find a DVD of it going cheap in a charity shop), as it's a quarter of a century since I last went to a cinema and I doubt that I'll be going again very soon!
BTW: 'The Last Bus' will always mean a classic episode of Hancock's Half Hour to me ;-)