Paul Corfield wrote:
There are width restrictions at both entrances [to the Rotherhithe Tunnel].
There are also very tight clearances where there the tunnel changes direction.

This is something that's always puzzled me - why does the Rotherhithe
Tunnel change direction? Surely, when it was being built, it would
have been cheaper and easier to just go in a straight line? Yet it
twists and turns constantly.

Patrick