The production's booking has now been extended through Feb. 12, 2010. It was originally booked to Sept. 26 only.

In a press statement, the National's artistic director Nicholas Hytner said, "War Horse caught the imagination of audiences from its very first outing at the National, and I'm delighted that this astonishing production is engendering an equally heartfelt response from thousands of theatregoers in the West End."

Morpurgo adds, "So, War Horse gallops on. I am so pleased for the National Theatre and for all those wonderful people concerned with this unique production and I am delighted that so many people want to be part of it."

Directed by Marianne Elliott and Tom Morris, War Horse is designed by Rae Smith, with puppet design and fabrication by Basil Jones and Adrian Kohler for Handspring Puppet Company, lighting by Paul Constable, and movement and horse choreography by Toby Sedgwick; the puppetry directors are Basil Jones and Adrian Kohler, with video design by Leo Warner and Mark Grimmer, songmaker John Tams, music by Adrian Sutton and sound by Christopher Shutt.

War Horse is produced in the West End by the National Theatre and National Angels and is sponsored by Accenture, supporters of Innovation at the National Theatre. To book tickets, contact the box office on 020 7452 3000, or visit www.warhorselondon.com for further details.