This article is about the original B303, now the southern end of the A3220. For the current B303, the former A3 on Clapham Common, see B303.
The original route of the B303 was a short road in Battersea.
It started on the A3 on the north side of Clapham Common. It then headed north along Elspeth Road before crossing the A303 (now A3036). It continued straight on along Latchmere Road, going under the Battersea railway lines, before ending at a crossroads on the A3205 and A3206, which continued ahead across Battersea Bridge.
The entire road is now part of the A3220 although for many years it was part of the A205.