Photo Flash: First Look at Felicity Dean in the London Premiere of A PRINCESS UNDONE

Kensington Palace, 1993. She was the Diana of her day. That day has gone, but HRH The Princess Margaret has a final chance to be of service. Acquiring sensational letters from Charles and Diana, she means to burn them all. But there are other papers, relating to Margaret herself. And when an ex-gangster admirer returns from her past, the Queen's sister has the choice to make or break her family yet again.

In Netflix's acclaimed global hit series, The Crown, Margaret (Vanessa Kirby) re-emerged as the most controversial and enigmatic member of the Royal Family. Craig Brown's recent best-selling Ma'am Darling reinforces how infuriating yet compelling her story still is. A Princess Undone - inspired by actual events - sheds new light on the last real princess.

The cast also features rising young actor Alexander Knox as Tristan Peel, the play's author Richard Stirling as the Queen Mother's butler William Tallon (aka 'Backstairs Billy'), and Patrick Toomey as the infamous John Bindon.

Creative team: Director - Jonny Kelly, Set Designer - Norman Coates, Costumes - Boo Williams, Sound - Gareth McLeod. Produced by Entico Ltd in association with Park Theatre.

Photos by Simon Annand