Angel station, as was

Transport hell - the narrow platform, so crowded ... so close to the edge ...

That was Angel station in 1989 (read more about Molly Dineen's film of it here); it was rebuilt and now has the longest escalators on the tube network.

Clapham Common station still has the open platform -

You can imagine what it's like at rush hour...

Both stations are on the Northern Line (aka the Misery Line), the busiest line on the Underground network -- it carries 206 million passengers a year.