Anna maxwell martin leads the cast in sharon horgan’s bitingly sharp, bbc sitcom about school gate politics, alpha mum rivalries and middle class parenting. With diane morgan and lucy punch.   sharon horgan's hilarious comedy explores the ups and downs of modern middle class parenting, bringing to life the alpha mum to the frazzled mum and everyone in between... School gate rivalry has never been so fierce.  follow julia, liz and kevin as they navigate their way through school pta fundraisers, frantic kids birthday parties and dreaded coffee mornings — all made more bearable with plenty of red wine!