Well I think I've got - by george she's got - thanks to the patient explanations. I am stumped on some of the actual answers and would be grateful for some help.
7a careless ????LES? - I thought of tactless or careless?
8a Kylie ????ERA?
11a In fact ???ECT?????
13b & c Devised by George W Bush (2 answers) ????STE? & ???KET ( I beleive that the fist answer is Tungsten)
20a More than half a metre B??CCI?
31a & b Where the bells ring ????EDI??? & ???ITI???