Whiteleaf, Nr. Princes Risborough

Charlie Boy
A recent location I found is that of Sarah's fatal car crash. Its The Holloway in Whiteleaf.
The road along which Sarah and Graham are travelling starts off being the A4010 through Monks Risborough, before they change locations to Rignall Road near Great Missenden

Thirteenth Reunion
The sequence where Ben is chased and then crashes his Jaguar were filmed at the top ofLongdown Hill, Nr. Whiteleaf, Princes Risborough