thought it was brilliant.
Yes its 8b, which is what it was originally given by Ken (correct me if im wrong). Went down to 8a+ for the Nick White Guide, Dorset Rockfax and back to 8b in West Country Climbs Rockfax, which incidentally has Brian down as 8c+. Tuppence is a stack harder than any of the 8a+s i've been on.
Tuppence certainly feels much more than one grade harder than Cider Soak, so it has to be 8b.