The dotted yellow line shows the ground level at the surface ... it is Hampstead which claims the crown of London's deepest tube platform. While the platforms at Hampstead might not be the ...

"From behind the yellow line on the platform at Kensal Green ... So writes Luke Agbaimoni — aka Tube Mapper — in this latest book of photography, Contrast. Roundel Projection – Nine Elms.

Now, when you’re waiting for the Tube’s arrival ... it’s worth not following the herd. The yellow line on the platform is often faded or dirty where the doors are (Picture: Getty Images ...

Reckless Tube passengers were caught putting their lives at risk after they were spotted sitting beyond the yellow line at an Underground ... leaning on the platform which came up to their armpit.