My first thought .. but because I wanted one in a hurry (helping a mate out today / couldn't find mine .. ) I had to buy one where I could find one (none in Wickes or Homebase). With a bit of discount I got him down to a tenner. ;-(
And for more money ..
However, it seems for only a few quid more than I paid for a 'basic' one I could have got one that uses LED's and / or did simple RCD go/no go tests.
Oh well, when someone is doing a 'special' sale maybe .. you never know when I'll loose this one .. ;-(
All the best ..
T i m