a zed and two noughts (1985)

aka Zoo.
"In the land of the legless the one-legged woman is queen."
Twin Brothers (Eric & Brian Deacon) have some very distinctive hobbies, that get stranger when their wives die in a car crash and they become obsessed with the driver (Andrea Ferreol)...
Distinctive art house fare, with even more distinctive music by Michael Nyman.

drowning by numbers (1988)

"You women are getting too proficient at this."
Cissie Colpitts (Joan Plowright) drowns her husband having tired of his adulatory. With the help of the coroner, the murder is covered up. But her daughters (Juliet Stevenson & Joely Richardson) are having similar problems and are soon looking at their mother's example as a way out.
Classic 80's art house, that is as beautiful as it is convoluted.