Basicly as the tittle says.

I got a used ESP M-1000 yesterday, and one of the saddles looks like it has been replaced and is slightly higher then the rest, there should be:

2x no#1
2x no#2
2x no#3

but i only have 1 no#3 and a slightly larger one. so one of my strings sits a little higher then it should.

Cheers james
dont know about the UK but i've found them on musicstore.com. seems that part of floyds are really hard to get by. maybe you could also ask a local shop if they can order it in?