[kalee20]

I haven't used a Safebloc, Quicktest or Keynector ever since I found that I can use a pair of 4mm to croc clip test leads directly in a 13A socket.

Stick one 4mm plug in the earth socket to open the shutters. Then stick the other in the neutral socket - you'll find it is a snug fit and makes good contact. Then withdraw the first from the earth socket (the shutters are now held open) and put it in the live socket. You now have power on your croc clips at the flick of a switch!

Usual caveats apply - do it with an extension lead so you have at least the protection of a 13A fuse upstream. I've never been daft enough to do it in a wall socket with just the 32A consumer unit fuse or MCB.

The slightly more acceptable version: a cut-off mains lead with a moulded 13A plug, salvaged from old equipment, with the open ends terminated in a 3-way piece of choc-block strip. You get your fuse built-in, and connecting your piece of equipment to the choc-block is still pretty quick.