|Length:||1.6 miles (2.6 km)|
|Meets:||A23, A3, A3205, A202|
|Route outline (key)|
The A203 is a fairly short road running through the inner suburbs of south London, following (or more accurately, followed by) the Victoria Line.
Starting on a one-way loop (for the A203 at least) on the A23 just north of Brixton station, the road heads off towards Lambeth along Stockwell Road. About halfway, it meets the A3 at traffic lights in Stockwell, then leaves it via a difficult triangular roundabout just to the north, before continuing as the South Lambeth Road to finally end in the huge maelstrom that is the Vauxhall Cross one-way system on the A202.