I got it the same as aristo E + Dec + K's (letters that produce [2xK plural K's])
23 was superb as was 29, many of them gave me a moment of penny dropping.
Thanks for the Tollbooth link peterm.
still can't see No 2 yet, but now think it doesn't look right for the only word I can see that fits in.
Let me check I have it right with you guys.
the letters i have starting from the 'B' in clue 2 and going clockwise are B S E V E R.
Is the third letter (E) correct or is it meant to be a 'D' which would give me the word I'm thinking of, but would throw out my answers to 1 & 5 which seem to be correct.