I always keep a set of large and small tick removers in my first aid kit. A couple of quid buys you the set of green plastic tick removers from a chemist.
Never, never cut them off! Leaving the head in can cause serious infection. Do not squeeze them or burn or oil them, as sloworm says. It can cause you to get very sick. Any reddening of the site of the bite especially if it looks like a ring, see a doctor and get antibiotics straight away. Better to have them and stay well than get lymes disease. Don't take chances or muck about with ticks, just carry an extractor tool and be vigilant after being in the woods. They are nasty little beasts!
Remember, they can be as small as a full stop. If they are large they have been feeding off you for some while.
Ladies..be carefull taking a pee., gents, be carefull when squatting.. I had one hitch a ride in a very inconvenient place, and had to have it removed in the local a&e, very embarrassing!
When you are told, check all over... it means just that! Get someone to check places you can't see too. You never know where the nasty beggars will crawl to once they land, armpits ,groin, backs of knees....Tuck your trousers into your socks and wear light coloured clothing so they are easily seen.
Stay safe and well.