"The Wicker Man" for me, not the least because it reminds me of the joy of stumbling over films you've only read about before..as "The Wicker Man" has been a rather obscure title outside the UK until the not exactly loved & cherished US remake
Beautiful shot one-of-a-kind movie experience with one of THE most haunting finales ever. What more could I possibly need?
Of the recent Brit horrors, "Eden Lake" and "The Children" are certainly in battle over the top position.