You can watch it on sky, one of the 9** channels! used to be 973 but not sure what number it is now. Edit: 953 now on sky. But if you open iplayer and select categories it should let you select from the different national variants and then select watch channel live. Only issue might be if bbc don't have internet broadcast rights for the film and don't stream it.
Failing that, I have it in MKV format, but it's 1.3Gb and I can't stick it on Dropbox without my PC on all day
Fantastic movie. Saw it 2 or 3 times before going to the TT this year. Well worth a watch, but also well worth getting on DVD as well.