Or check out some of these:
I assume you mean a meat thermometer, not a candy or oven thermometer. There are also very cheap one-time use I think warning thermometers that can be used for turkey,e tc., but hear they're not that reliable and don't go down into the meat very far where it needs to be measured.
Did you want one that's instant read, or can stay in the meat, or that doesn't have the other end of the probe outside the oven, or what?
Lakeland does this one http://www.lakeland.co.uk/food-thermometer/F/product/12873
I hope this was help to you!