No, they do not. In so-called traditional fox hunting one or more terriermen were employed by the hunt to kill foxes that had sought refuge underground (“gone to ground”), but terriermen have no legitimate role in a so-called ‘trail hunt’ as the hunt is not supposed to be chasing foxes at all. Terriermen are still permitted to use a dog below ground but only to prevent or reduce serious damage to game birds or wild birds kept for shooting, livestock, or biodiversity (known widely as the so-called ‘Gamekeeper exemption’).