Thanks Neil. Jon Read has been in touch and has a full backup of the old gritlist.
It's way more than a list and requires more than a UKC ticklist. The idea is to give prospective ascentionists an idea on the style, technical difficulty, danger, recent / best ascents, history, interesting anecdotes, how clean it is likely to be etc etc, which can't be read from the grade and guidebook description.
A google sheet would be (a slightly crude) option.