Climate change is shit, but could it not be the change in chemicals that farmers use to treat sheep and the increase in deer numbers? Correlation != Causation etc.
I returned from a kayaking expedition around Arisaig (NW Scotland) last weekend and have removed around 40 tiny (mite sized) ticks from my arms and legs!
I nuked the site from orbit, it's the only way. The estate owners are not happy.
I hope you don't mean burned them off? if so, it's not a good idea. Tick tweezers are the only things that get the tiny ones out complete. Even the small plastic tick hooks are too big.