A46
From Tardis Wiki, the free Doctor Who reference
The A46 was a road in England.
The A46 intersected with the M4 at junction 18, located just south-east of Chipping Sodbury. When taken north from this intersection, the A46 went through Nailsworth, Stroud and Painswick, then bypassed Gloucester.
The A46 appeared on Mary Cooper's map of overflow camps in and around Wales. (TV: The Categories of Life)