People tend to check in during these times:
Dont do what I did and sit on the roof of the train for the journey... bit breezy
Platform personified ;-)
Apparently platform 12 has the highest elevation to all others. Apparently....
This platform is a lovely combination of concrete, tarmac and yellow paint. Much better than that jumped up platform 11!
Lovely platform to train height ratio
Don't expect to get a seat on the train in rush hour! Try walking to end of platform, away from ticket barriers for your best chance.