Yesterday was awful for my wife who works near London Brridge Station. She uses a walking stick but was told by the yellow-tabarded staff that she was not disabled as shw wasn't in a wheelchair. She was evetually allowed in the Tooley St entrance by one of these uesless jobsworths who said he would take her up to the platform. He didn't. He left her near the lift (which she wasn't allowed to use) and had to make her way through the crowds (as did an 8-month pregnant woman she works with).
Quite simple really, if you are disabled or pregnant, you are a nuisance and Network Rail couldn't give a monkey's for your safety.