Late Expectations (1987)

In BBC sitcom Late Expectations middle aged couple Ted (Keith Barron) and Liz Jackson (Nanette Newman) are shocked when they return from their 'second honeymoon' and discover that Liz is pregnant. Finding herself pregnant at the age of 43 leaves Liz less than impressed and in a gift that keeps on giving she then finds out she is expecting twins. The Jackson's three grown up children also need some time to process the news.