In article
s.com, Peter Heather writes
On Mar 15, 1:12*am, "Michael R N Dolbear" wrote:

*34 km 21m 71-79 min
Erith - Bexleyheath - Shooters Hill - Lewisham - Peckham - Elephant &
Castle - Trafalgar Square


Well, I admit I haven't looked at every single route, but the 409
between Croydon and East Grinstead is shown as 44km or 27 miles. It's
not a TfL route, but operates in London for at least part of its
length and is s stage route.

How about the 402 Bromley - Tunbridge Wells?
--
Bill Borland