1963: Lizzie has just arrived in London, determined to make the best of her new-found freedom.

Her mother may be keen that she should have a conventional wedding in the country to a Suitable Man chosen by her... but she definitely wants to have some fun first.

Soon Lizzie has cut her hair fashionably short, bought herself a minidress, and moved in with two of her best friends in a grand but run-down house in Belgravia.

Before long, Lizzie's life is so exciting that she has forgotten all about her mother's marriage plans.

All she can think about is that the handsome man she is falling in love with appears to be engaged to someone else...