As you wish....
Here are the answers from mookie and the flyingscotsman - its a combined entry (and the results of that are pathetic)
1. Slough platform 2
4 Swindon platform 3
7. Banbury
9. Nailsea
13. Brighton
15. Reading platform 4 and 5
16. Newport
18. Oxford
19. West somerset railway Bishop lydiard
20. Blanau Ffestiniog
10/20A fair effort and answer 9 scored, despite not being the full station name. I was feeling generous!

I would have got 11 if I'd remember to post the bracknell one - I only know that cos I was on the up platform under that bridge when I was withering on to my mom and my mate about possibly not getting my Match flight to the states cos of that iceland volcano - I noted at the time the disparity between the platforms - I said it was bracknell - but when we compiled the results we forgot it!