This article is about the original B286 in Surbiton.
For the current B286 in Morden (Merton), see B286
(former B286) Kingsdowne Road
The B286 was originally allocated to Kingsdowne Road in Surbiton. This was a short road to the south of town connecting the A243 and A240 at their closest point to each other.
When the decision was made to allocate the A3 number to the Kingston Bypass instead of the A239, the B286 suddenly became out of zone and was, along with the B287, renumbered as the B3364. Since then, the road has been upgraded to the A3210.