|Via:||Pembroke Road, Upper Belgrave Road|
|Distance:||0.9 miles (1.4 km)|
|Met (1922):||B3124, A4018|
|Now part of:||B4467|
|Route outline (key)|
The existence of this road, being entirely north of the River Avon and the A4 Portway, yet still receiving a 3 zone number, suggests that in 1923, the original A4018 in fact formed the 3/4 zone boundary from Bristol to Avonmouth. Today, Pembroke Road is the B4467, while Upper Belgrave Road is part of the A4176.
Curiously, the 1923 MoT map suggests that the B3125 went along the now-unclassified Apsley Road instead of Upper Belgrave Road. However, the 1922 Road Lists describe the B3125 as Bristol (Pembroke Road, Upper Belgrave Road). To further complicate matters, the 1938 OS 1:10560 sheet seems to label some of both routes as the B4467, with the B4468 taking over most of Upper Belgrave road to reach the A4018 (This is only explicitly labelled on the 1955 sheet). This, however, creates a 'split end' which was not common practice in 1922, suggesting that the route had been changed.