In reply to nniff:
> I found that the We buy... and the like would not buy unless the registered keeper was present.
I sold parents car to WBAC without them present, can't remember what documentation I needed (think I had a letter authorising me to sell the car signed by my dad, and id stuff for both him and me), but it wasn't a problem. This was just before Covid struck.
Also got a reasonable price from WBAC but that was because it was a small (Corsa) automatic which pushed their starting point up by £1k on a 13 year old car (eventual payment was £1,500).
Funnily enough, if the Gov website is accurate, it hasn't been taxed since 23 Feb 2020 so maybe it's been scrapped - doesn't look like one of WBAC's profitable purchases though 😁