This week most of the clues seemed to be straightforward then, as is the pattern, I got stuck..
I thought the extra word was the first in clue 1. Reading this excellent thread I see that the extra word is in 38 down, Is the extra letter in 1 down in the penultimate word? If so I'll have another bash before returning to this thread when I next get stuck. Mrs Seal is preparing an early dinner so I can watch my beloved Wales.