Back in September 2015 a group of chaps from the RAF Spitfires Rugby 7s team did a charity ride around the Battle of Britain sites in Southern England .... on Bromptons!
The route crossed the Thames S-N via the Greenwich tunnel - this
https://www.youtube.com/embed/9_VWlhm3cCM with their singing in the lift is entertaining - I was driving the support van and, obviously, had to go through the Blackwall Tunnel from Greenwich to meet up with them again.
.... I should add that the guy with the yellow jersey is (very) Welsh and didn't really go along with the idea of Jerusalem and it's ENGLISH anthem connection!
Rob