[studying a plan of the hospital]  Ernie Bragg : My mum had me on top of a bus. Sid Carter : I'm glad he told us that, makes the job much easier. Ernie Bragg : Number 73, it was. Bang in the middle of Brixton High Street. Sid Carter : Alright, alright, so you're a born traveller. Now will you shut up for a minute and listen. [returning to plan]  Sid Carter : Now, as far as I can see, the only way we can get into the basement, here, is through the front door of the hospital, there. Freddy : Can't be right. Sid Carter : Why not? Freddy : Number 73 don't go to Brixton.