Spot the difference with My Lord Adonis

An exciting new competition from the Eye!

Using your skill and judgement can you tell the biggest single difference between the following stations?

This from the Pilgrimage of Grice blog:

"Sheffield station is a real delight. It has been beautifully restored in recent years and has excellent retail and waiting facilities for passengers – open to a reasonable hour in the evening, unlike my recent experience at Southampton Central station."

Clue: One has barriers...