In the opening minutes of Best Interests (Monday and Tuesday), an estranged middle-aged couple made their separate ways to court, pausing outside it to look at each other with a mixture of furious reproach and overwhelming regret. From there we cut to a scene that perhaps overdid the evocation of Happier Times as the same pair laughed endlessly together on a train, before nipping off to the toilet for a spot of giggly conjugal naughtiness.