We get a predominantly SW wind in SW England, and trees in exposed areas (south-west facing coastlines, high ground etc) get pretty battered at times. In parts of Cornwall, trees almost seem to grow horizontally.
As for Dartmoor being sinister - well, it's difficult to navigate at times, with lots of blanket bog (jump up & down & the ground wobbles beneath your feet) & mires, it's very exposed with precious little shelter anywhere, & prone to fogs, which adds to the aesthetic, or makes the place look a bit scary. But it's a wonderful, fascinating & beautiful place, with a higher concentration of stone age & bronze age archaeological sites than anywhere in western Europe. Worth a visit if you're in this part of the world.