I was wondering that cupid - somewhere on the north east coast I reckon.
Wasn't it good? And I thought the actress who played Lindsey was the real-life daughter of Gina McKee - they look incredibly alike.
There's a BBC article written by Aisling Loftus which says they filmed the outside stuff in Skegness and the rest in Eastbourne and Watford.
Although I have to disagree with cupid04 - I thought the music was great. It was by the superb Max Richter, although one track of his (On The Nature Of Daylight) was a bit overused.