yes LnL rabbits are legal and beddy x breeds are ideal for the job .... a bull x with any more than 1/4 bull in it is too big and hard and is ideally bred for larger game ..... how many bull x's do you own ??? 
 
  
i have 4, 3 1st cross and 1 bull grey lab, i also have 1 beddy whippet and 1 beddy whippet collie grey, I like my bull x's though, they look pretty and decorate my kennels lol! they are not bad on rabbits, not as good on them as the 2 beddy x's but as you say they are bred for larger quarry. 
 
  
you have a lot of bull x's ..... do they all get regular work ?? 
 
I generally ru