This 35mm screening (also scheduled for August 25th) is part of an Ingrid Bergman on screen season at BFI Southbank. Full details here.
Chicago reader review:
Ingrid Bergman and Liv Ullmann howl in the night in Ingmar Bergman's 1978 study of the guilt, recrimination, and tentative forgiveness flowing between a mother and a daughter. The movie makes good chamber music: it's a crafted miniature with Bergman's usual bombast built, for once, into the plot requirements. The nonsense with the handicapped daughter is a little distracting, but the rest is often honest and surprisingly to the point.
Here (and above) is the trailer.