I have just been looking over my puzzle to realise that I did
not complete one clue.
18 (A) Dotted i missing from coil? Extremely negligent (6) :
S?REAT
Thanks for your help!
Matakari, 'quite negligent' is one way of describing all your woes and errors with this puzzle! The good news is that you're almost certainly going to have far fewer problems with Mephisto and the Sunday Times cryptic...