This. @LeeUK have you spoken to them and asked them not to drive over your garden?The issue is the neighbours here... They need spoken with and then, if it continues, other measures would be done to discourage them from doing so i.e. fneces, hedge, stones as damaging their vehicle(s) soon encourages better behaviour (when I say damaged vehicles, I mean them hitting said fence/hedge/rocks, not the OP vandalising them)