Filming Location:

Old Amersham

Guardian of The Abyss

Old Amersham High Street near the Market Hall

The Thirteenth Reunion

The Kings Arms Hotel (probably famous for it’s use in Four Weddings and a Funeral) was used for the restaurant scene when Ben and Ruth have a meal. Thanks to Kevin Flanagan for confirming this location.

Visitor From The Grave

The lake where the Range Rover is dumped is almost certainly Shardloes. Thanks to Kevin Flanagan for confirming this location.