I got 11 of the themed clues and their pairs.
Stuck on the last 5 clues in all and really stumped.
8ac: Got rid of Times boss? (6)
I have: -R----
21ac: Cruel fellow, sobert first (6)
I have: S-D---
I think it must be sadist but can't parse it
47ac: Island with volume ten (9)
I have: C-P-I-C-O
I think it must be one of the themed clues, but just can't see it
10dn: Former captain will found out about abstract art (7)
I have: --R-U--
11dn: Fishtail in shabby boat (6)
I have: --N-H-
All help very gratefully received as always!