This 35mm screening is part of the London on Film season at BFI. Full details here.
Chicago Reader review:
This turned out to be Alfred Hitchcock's penultimate film (1972), though there's no sign of the serenity and settledness that generally mark the end of a career. Frenzy, instead, continues to question and probe, and there is a streak of sheer anger in it that seems shockingly alive. The plotting combines two of Hitchcock's favorite themes: the poisoned couple (Marnie, The Man Who Knew Too Much) and the lone man on the run (North by Northwest, Saboteur); its subjects are misogyny and domestic madness. With Jon Finch, Alec McCowen, Barry Foster, Vivien Merchant, and Anna Massey.
Here (and above) is the trailer.