I only hunted a handful of seasons, but during that time I only heard of the fox getting nabbed once (it was on a day that I wasn’t hunting). One of the members got the tail. Members certainly don’t look forward to that kind of thing, and don’t take it lightly either. For us, it was a big deal just to view the fox, and it would spark discussion for days/weeks until the next good sighting.
I’ll never forget one day we got stopped, single file along a wooded trail. The hounds and staff were somewhere in front of us, running around in the woods. Charlie doubled back and stopped on top of the ridge above first flight, and watched us for a good 20-30 seconds (while the hounds were off somewhere else!). He was probably only 40 feet from us, and we didn’t stop talking about it for a month. It was one heck of a great run directly after that, too.
From what I learned, the sport in this country is really just about getting out and having a good run, not at all about killing. The ones that do get killed very rare, and are generally old, ill, already injured, etc or just flat out not in their territory. Our staff carried revolvers to ensure it was dispatched quickly if possible (and humanely), amongst other reasons to carry. I think many hunts and members are careful to monitor the fox population in the territory, and ensure they are as healthy as possible. Healthy foxes make for great chasing and happy members, after all.