In Aus no standard power circuit will handle this power, normally they are 10A (2400W) but you can get 15A fitted. I would think the UK is similar as we copied most things from you (except that stupid plug thank goodness :))
could I replace the fuse with a bigger one to handle the amps?
Yes, I recommend a 4" nail or failing that some #8 fencing wire in a pinch.
Rob