Not only is Exmoor a tick hotspot, I'm told it's now a Lyme disease hotspot. It is thought that most of the working collies there have Lyme Disease.
So if you got a tick bite in Exmoor, I'd get yourself off the doctor and get the antibiotics. Pronto.
And to avoid the little blighters (for those who won't read all those good links), DON'T walk through bracken in sheep or deer country (this means don't walk in bracken on Exmoor), wear long trousers and sleeves, tuck your trousers into your socks, and when you get home, get stripped off and showered and inspect yourself
thoroughly. They like moist warm places, so I mean
thoroughly and it'll need a mirror (or a helper) and a lack of inhibition!