From Roader's Digest: The SABRE Wiki
The SABRE Wiki, which is designed to inform about roads in the United Kingdom and Ireland, both on the numbering of roads and on the network's history, signage and more. The name, voted on by SABRE members, is derived from the original Roader's Digest, which the Wiki has largely replaced.
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 nearly every numbered road in the United Kingdom, 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 A-roads in Great Britain. This work is still ongoing as this version of the Roader's Digest has recently been set up, and we are still in the process of adding all the information we hold on British and Irish roads.
We're also looking for more help in order to further improve our coverage of the networks, especially that relating to the island of Ireland. Any SABRE member can add and correct information, so please dive in and help!