I just clicked the link you supplied Phil, I never realised it went to my version of the film.
The cars used in the film were sadly not all period. The Armstrong was a 1952 model and there were others which were younger than they should have been. For the gneral public who will not be able to tell one car from another that's fine but for anyone who knows there classics I think they may feel a little cheated. I remember hearing that one of the Ford Groups had been in touch with the film makers as the 2 Fords that were used were also the wrong cars.
I have not yet seen the film, I missed it when it was showing at Glasgow and last weekend I checked to see where it was showing, Isle of Harris or Hawick, so I guess I will just have to wait until it comes out on DVD before I get to see it