The Christmas Window Live

Curtains in a London shop window open to reveal a surprise live performance. First up is band Sadie and the Hotheads, fronted by Downton Abbey star Elizabeth McGovern.

Pop star Pixie Lott surprises shoppers at Westfield Stratford City with a magical live performance from behind a shop window.

John Hurt and the Academy of St Martins in the Fields are revealed as the next mystery performers behind the shop window at Westfield Stratford City.

Lisa Stansfield is the fourth performer who is waiting to surprise shoppers with a magical concert from behind the Christmas Window at a major London shopping centre.

Bringing the surprise of an advent calendar to life, the curtains open on a shop window at a London shopping centre to reveal Alexandra Burke and the London International Gospel Choir.

Britain's Got Talent winners Collabro thrill shoppers at Westfield Stratford City with a live musical performance from behind the Christmas shop window.

The curtains open on the Christmas window at a London shopping centre to reveal a surprise performance from musical theatre star Michael Ball.

Star solo cellist Julian Lloyd Webber is the surprise act at Westfield Stratford City tonight. He thrills shoppers with a beautiful performance from behind the Christmas Window.

The surprise of an advent calendar is brought to life as a London shop window plays host to a surprise performance from musical trio Sol3 Mio.

Soprano Laura Wright is the tenth performer waiting behind the curtains of a shop window at one of London's major shopping centres.

The Christmas Window plays host to a brilliant surprise performance from the cast of smash hit West End musical Stomp.

The curtains open on the final performance at Westfield, Stratford City, where English classical violinist Tasmin Little is waiting to give a star performance.

A compilation of the magical performances from behind the Christmas Window at Westfield Stratford City, where stars including Pixie Lott surprised shoppers with incredible shows.