2023 August 31, Emma Beddington, “Fish doorbells! Historic sandwiches! 50 of the weirdest, most wonderful corners of the web – picked by an expert”, inThe Guardian[1],→ISSN:
You can filter for distance, difficulty and for circular walks only. It has taken me to some spectacular spots (and trudging along a fewA-roads, too, but that is mainly my incompetence).
Great Britain road numbering scheme § A roads on Wikipedia.Wikipedia