tubechallenge.com

Therefore everyone who enters gets this round correct by default, since we can only accept Jamesthegill's first answer.

Well done to all those who spotted that it was the Charing Cross branch of the Jubilee line.

Those who got it right:
Steeevooo
tangy
Starkey7
barrykas
Edgemaster
al
jbom
greatkingrat
garion24wales

Those who didn't:
uefacup81 (Upminster)
jonny (Blackhorse Road)
Going Underground (Angel)

When was the picture taken? Or did you find it off the internet?

Before 1999 I'd hazard ...

It was taken last October, by a poster on District Dave's forum.

Ah ok just wondering, because its rare to get access to those platforms (as far as I know)