Ok solved the problem, there are two fuses one is 20amp for the permanant live and one for the switch live which is fuse 31. This had blown as it was only 3 amps. I checked all the 10amp and 5amp ones as did not expect it to be so low. Have replaced with a 5amp and all seems to be good now. Thought I would post this in case anyone else had the same issue. :)