I came to the forum late - wow what a lot of help! Thanks to everyone for their constructive help. I've now finished (after a long struggle) but couldn't parse a few:
13a - brass=pro??
19a - there's no mention of ruby=curry in Chambers (thanks xwordfan for the rhyming slang)
38a - ara=a group of stars??
40a, 1d, 29d - got the answers but can't parse them.
Any help with these gratefully received and if I can help with anything I'd be glad to do so...