Thank you. There does not appear to be any leaks. The only water present was that which came from the pump valve when I removed it to check the pump was working. It is now dry again but the fuse is still blowing. Any further suggestions will be gratefully received.
My boiler recently packed up a couple of days after I had repressurised and bled the rads due to the pressure having been very low without me realising. I now have no hot water and no central heating. A friend has a had a look at it and he tells me that something is causing the fuse to blow...