Some advice - ask Network Rail to remove the bufferstops/signs and the tree that is getting in the way.
Shot Number 1 - Issues here with composition (without the bufferstop it would be okay) and also exposure
Shot Number 2 - This has a lot of potential, but the piece of tree in the way really spoils it.
Shot Number 3 - Isn't too bad, it is more interesting than a usual shot of a 458 anyway.
Shot Number 4 - Pressed the shutter way too early, also needs some rotation and that tree is there again.
Shot Number 5 - Would be good if the post wasn't there, the tree wasn't there and it was at the correct angle (although the latter can be fixed in PS or whatever).
Shot Number 6 - Least said the better.
Basically, my advice is - find a better location.
John just shut the F**k Up about people photos.
Sorry, but I find that remark offensive and unneccessary.