which uni did you goto ?
if you went to a decent uni, the vast majority of masters will accept a third if the min requiremnts are 2:2
a very good tip for you though, is to speak to the admissions tutor before applying, as it doesnt create a good impression if they think you havnt read the entrance requiremnts! it also a good oppurtunity to sell yourself for when they consider your application.
if its any help, i got a third, and am on a funded (yes funded!!) stat masters