Culturally British Thriller Research

To get some inspiration, I've looked up the top five 'culturally British' thrillers according to the BFI:

1. The Third Man (1949, Reed)
2. The 39 Steps (1935, Hitchcock)
3. Don't Look Now (1973, Roeg)
4. The Ladykillers (1955, Mackendrick)
5. Brighton Rock (1947, Boulting)