Bedford Harrington Legionnaire - ALR453B

This coach has been a regular sight when driving towards Wolverhampton for a few years.  Only recently has it had the paint work and final touches to reveal its heritage.  I'm sure many of you will recognise the shape from an iconic film.

Research suggests it isn't the original; according to the internet that one was scrapped in the 1990s, but obviously whoever has taken the time and effort to restore this coach has been painstaking to produce a copy true to the original.  That it has the original registration of the vehicle used in the film (it is on the public highway) you might wonder if they've spent as much on the number plate as the rest of the coach?

I won't ask for guesses as to the film, I'm sure it's too easy given the clues.

ps, it even has the doors on the back!