You may still encounter various invasive species of amphibians, including
the Bullfrog, Rana catesbiana, according to this page which may also help
you to identify what you have:

http://www.herpetofauna.co.uk/identification.htm#native

Happy Ponding,
Tim C.

"ian.birtles" wrote in message
...
Sorry guys but i am in the U.K. we dont get bullfrogs but thanks for the
response