Mile end platforms and lines

To put it simply, the District line runs just below the surface and it's tunnels are all 'twin track' - the tracks in both directions run next to each other.

The central line, although at a relatively shallow depth here, runs in what are known as 'deep level tube' - the track runs in it's own tunnel in each direction.

_{Whilst there are obviously exceptions throughout both lines, this is the general convention at Mile End.}

So with the District logically occupying the centre pair of tracks, the opportunity was taken at this location to provide cross platform interchange for both lines in the same directions.

They do indeed share the same tracks.