To Aljanon and Bullfrog - Thank you both so much. I am in awe (and envious) of your talent. Maybe some day I'll manage.......
There are 2 other clues which I have been bold enough to fill in - even though I am baffled by the first of them:
It's cold here, and cold in lorry (6) _ _ _ T _ C I wrote ARCTIC
The R of Arctic gives me R _ O _ whhich must be RIOT for the answer to Chariots surrounding commotion (4) That just seemed TOO easy in the light of the level of difficulty of some of the others.