One for you numbering geeks...
I was writing up the rather convoluted history of the [[A4018]] and spotted something that makes me wonder if a few maps are wrong, or at least inaccurate. Let's quickly recap what we can see on the maps
1) MOT maps (1923 and 1926) - A4018 runs from Bristol to Avonmouth via Shirehampton
2) 1932 and 1934 Ten Mile - A4018 has turned into a B road
3) 1945 NPE - A4018 is back but only as far as Westbury Park
However, I reckon the Ten Miles are not correct. My reasoning is the 1935 Renumbering Documents, which include an entry for the B4470 described as "Bristol (Link at Westbury Park)" with the note "Renumbered as B4054 (Westbury Park Spur). Indicated at north west end as A4018 (chequer)". That kind of suggests a far more simpler case of affairs that the A4018 was cut back to here
when the Portway opened, with the road ahead becoming B4470 for all of a few hundred yards, then an extension of the B4054 after that.