Why do hunts need terrier men?

[ahlam1399]

As the title really, i'm just curious as to why a hunt would have terriers with them post ban? I can't say I fully understand how hunts work and therefore also what's legal post ban so i'm interested to know why they would be there now because I think I would have assumed they could no longer be used on a normal days hunting?

أكثر... (http://www.horseandhound.co.uk/forums/showthread.php?757840-Why-do-hunts-need-terrier-men&goto=newpost)