I found this on the beach at Swalecliffe, Kent this morning. The Environment Agency have recently been doing some sea defence work at this point, and it is possible they may have disturbed it from its resting place. Is the long piece of bone protruding beyond the teeth unusual and an indicator of the type of animal it came from?
This could be cow or sheep, hard to tell without a few good photos and a size reference. If you take photos of both sides of the jawbone with a ruler next to the specimen, we could tell you more. A photo of the grinding side of the teeth also helps.
Thanks for quick response.
I've attached a few more photographs. I hope that they are helpful. As you'll see from one photograph, the whole bone is about 1 foot long.