|Location Map ( geo)|
|From:||Old Windsor (SU980750)|
|Distance:||1.4 miles (2.3 km)|
|Now part of:||B3021|
|Route outline (key)|
The A3063 was not in the original 1922 Road Lists (its number then was B3021), but came into being a few years later. It left the A308 and ran around the east of Windsor Home Park, crossed the Thames, and finished on what was then the A331 in Datchet.