Owen, I'm further West than you and as you say it's getting worse every year, The Peregrine and hen Sparrow Hawk have always been a problem here but the last 5 or so years the Gos has become a complete nightmare, they can hunt in different ways, like the hen Spar. and also chase in the air, they are fast over short distances and are big enough to snatch and go, I have miles of coniferous forestry around me, perfect habitat for them