Hello, from your photo it looks like it maybe a fossil sharks tooth. Do you have any other photos, or could you take another photo showing its scale? Also where did you collect it as that would help identify it.
Thanks for posting commentything. I'm sorry I haven't replied for two weeks as I have not checked my account for a long time. I found it on a beach near the opening of the river hamble near Southampton. I have had it for several years so it is hard to say where I found it exactly but it was around that area. It is about half the length of a table tennis bat and the width is about the same as the handle.