Two West End shows - Marie Jones' Stones in His Pockets and Abba musical blockbuster Mamma Mia – have announced extensions to their booking periods this week.

Marie Jones' multi award-winning Irish two-hander Stones in His Pockets, which marked its 1,000th performance in the West End in October, has added another month to its run at the Duke of York's Theatre, where it's now taking bookings up to 28 June 2003.

The current West End cast are Rupert Degas and Brian Doherty; a separate production continues a four-month UK-wide tour with Malcolm Adams and Hugh Lee. The play's many awards include the Whatsonstage.com, Olivier and Evening Standard awards for Best Comedy and a Special Achievement Award from the Outer Critics Circle in New York.

Based on the songs of 1970s Swedish supergroup Abba, Mamma Mia opened at the West End's Prince Edward Theatre on 6 April 1999 and has just extended its booking period by another six months to 27 March 2004. A Broadway production of the musical opened in October 2001.

Catherine Johnson's book sets the action on a Greek island where, on the eve of her wedding, young Sophie has gathered together her mum's three ex's in a bid to find out who her father is. The score includes Abba classics such as Dancing Queen, Thank You for the Music and Take a Chance on Me. Directed by Phyllida Lloyd, the current cast features Louise Plowright, Laura Michelle Kelly, Susannah Fellows and Paul Basleigh.

- by Terri Paddock