Den Gwatkin is a mate of mine. He's been Champion Cider Maker of Britain twice, suggest you try his Yarlington Mill cider which is the variety that won it for him both times. His Blakeney red is a good medium-sweet perry, for something a little drier, the Thorn perry is worth a try
I've been there a couple of times, good range but bloody expensive. The average strength for a real cider is about 7.5% ABV. Apparently it's known by many locals as Middle Class Farm.