Hi Dave, J473 I'm struggling to recognise as Collingham. Not the station crossing for sure, too angled and no station building behind if the train is heading towards Lincoln. The angle suggests where the A1133 crosses the line, but I thought there was small crossing box right by the crossing. I also remember it as a fairly wide road, I wouldn't have gone over it before 1971 though maybe widened in the meantime?
A little story about Morris 1100s if I may? Not long after they were first launched my uncle found a leaflet for a competition to win one. Run by a toilet roll company, Andrex perhaps? To enter you had to guess how many toilet rolls there were crammed into a Morris 1100. He guessed and won the car, salmon pink, I think, 282VKM, still remember the reg number after over 50 years! My first car was a Mk2 version 10 years later.