In message , John Rowland
writes

Rotherhithe tunnel

I doubt it... a normal single decker won't fit.

The double-deck route 82 used to run through the tunnel until the 1960s.
Here's one just emerging from the northern exit:

http://www.busesatwork.co.uk/051-100...82_RTL1613.jpg

I have a feeling that the roadway through the tunnel was lower in those
days (as it was in the Blackwall tunnel), giving better height clearance
at the expense of (even) narrower width. Apparently buses on route 82
were equipped with specially reinforced tyres to mitigate the constant
rubbing on the kerb while going through the tunnel.
--
Paul Terry