Here’s a fascinating website for anyone with an interest in the UK Road Numbering system and how it came about and lots more info and photos too :-
An extract from the intro page:-
"Road Lists
Arguably SABRE’s greatest achievement is in beating the authorities at their own game! Over the years, not only have we compiled a list of every numbered road in the UK, but we also have reason to believe that our listing is more comprehensive than the one kept by the Department for Transport. In addition, our members have worked together to produce in depth narratives of many of the country’s A-roads. This work is still ongoing.
In this part of the website, you can look up all manner of information on Britain’s roads. Links to each section are to the left. If you’re not sure where to begin, read on…
For a comprehensive database of every numbered road in mainland Britain, turn to The Roaders’ Digest.
The Roaders’ Digest (or RD, if you like) is a fully indexed and searchable resource of every numbered road in mainland Great Britain, with the last known whereabouts of roads that no longer exist and the planned location of many numbers that were never assigned. It’s constantly being updated and revised by our members.
It contains links to more specific websites for many of its entries and is the ideal place to start looking for information on a particular road.
Looking for in-depth information about a one- or two-digit A-road? Look no further than The First 99.
This is an ongoing project to catalogue the roads A1 to A99 - the ‘first 99’ in the road numbering scheme - in great depth, with a detailed narrative account of each road.
With many roads you can read the description and get some idea what it would be like to drive - not bad for 99 pages of text.
Details on very nearly a thousand of Britain’s roads are to be found in Roads by 10.
This project has spent more than three years cataloguing the roads A100 to A999 in depth. At first all we asked was to find out where each road went, but over the last year we’ve demanded more. For many roads you can now read a detailed description and the eventual aim is to draw together a narrative text for all 999 roads.
Roads by 10 is SABRE’s original road cataloguing project and by far the biggest. Its name comes from the original idea - to submit a group of ten (the A240s or A690s) all at once. Thankfully you no longer need to do ten at a time!
Turn back the hands of time with the 1922 Road Lists.
Britain’s roads were first assigned funny little alphanumeric tags in 1922, and the full catalogue of numbers as they then stood was published by the Ministry of Transport. Our 1922 Road List is that original list, lovingly transcribed from an 80 year old booklet to HTML format."