All I would suggest is vigilance, if you been at a driving day out in the countryside then check yourself when you get home, if you find anything then deal with it, Ticks will usually be more prevelent in areas where there are deer and or sheep, that's not too say you can'y pick up a tick in your local park but I'd be surprised if you did.
It's like anything, if you are frequenting a high risk area then be more vigilant, I brought DEET back from the US, which is really good, I spray it on in the morning before going to work, especially during harvest, when I'll be wading through long grass if a mchine happens to break down. I also carry a pair of tick 'pliers' in my tool chest, they are a good thing to have in the cubby box, I'd recommend getting the proper ones though, they are almost sure to remove the whole beastie, last thing you'd want to do is leave the head and jaws behind to become infected.
I'd also say that if you are checking for Ticks, don't just look in the obvious places, legs, arms etc. Look in all the wee nooks and crannies, that get warm and moist, armpits, crotch etc, I've had a couple in some very delicate places!
They will usually be found climbing up you legs, they are attracted to the carbon dioxide in your breath, so will make their way 'north' if they do manage to attach themselves to you.