The B211 is a short B-road on the edge of Greenwich.
Originally it started on the A206 just to the north of Westcombe Park station before heading south along Westcombe Hill. This section was declassified and partly destroyed when the parallel A102(M) (now A102) was built in the 1960s and so the B211 now starts in Blackheath at a gyratory with the B212 and B210.
The B211 continues east along Old Dover Road, bridges the A102 without a junction and then reaches the A207 Shooters Hill Road where it ends. Despite the street name being Old Dover Road this road has been the B211 since classification in 1922.