I have just moved into my new house and upon using my oven for the first time it tripped the fuse box off when I turned the heat on. It does this every time. I had the oven cleaned a month ago but have never actually used it before and am unsure if this could be the cause. I require that the oven is checked to find the fault and a repair is carried out or i'll need to be advised if a new oven is required.

As a second job, unrelated to the oven, I require a shower isolator on/off switch in the bathroom be repaired or replaced because it won't switch off. Shower works fine though.