What "big game" are available in Great Britain?

Not sure what you class as "big game" but we have the following:
Red Deer,
Fallow Deer,
Sika Deer
Roe Deer
Muntjac
Chinese Water Deer
Feral/Wild Goat

We also have a small but growing population of Wild Boar.

In addition to these, there are other "exotics" available to stalk, usually behind a high fence of somesort....

Regards,

Pete