Tinker Tailor Soldier Spy filmed at Carmel College, Mongewell. This former school in the Oxfordshire countryside was turned into a casino, where Smiley questions a man who manned the phones that night. On screen it's Casino.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? The United Kingdom travel atlas covers money, language and getting around
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Mongewell and it tells you what was shot around you, how to get there, and whether you can actually go in.
Download Venture for iOS Android