JB Priestley's "When we were married"

 Set in stuffy late-Victorian Yorkshire, three couples meet to celebrate their 25th wedding anniversary, only to discover they were never married in the first place! They find themselves evaluating their lives, exploring the single life and vigorously putting their marriages to the test, but will it make a difference to their real lives and memories? Always a favourite, J B Priestley is known for his clever wit and comments on society.