You can and you will loose your licence should you be caught doing something thats not in the hunting bill whats left of it.
Several have especial in Cambs and fines that are very hefty. Thnk wisely what and how you do things just now as you are ONLY goong rabbiting or ratting and in the future, carry a few Nets with you if you have permission in case a hare jumps up that you did NOT intend to course and remember all hares must now be shot.
On permissioned land many lurchers as you like can go with you but there will always be nosy twats looking to shop ye.
THink now that the ban is her