I've changed the tags on these AV relations, so that https://www.openstreetmap.org/relation/2820043 is now AV and so is  the AV superroute containing both parts, https://www.openstreetmap.org/relation/2820053 .
The EV12 superroute in the UK is entirely separate - see https://www.openstreetmap.org/relation/9476239 .  That goes via a bunch of national NCN routes as well as some dedicated EV12 ones.