The Duke and Duchess of Cambridge and Prince Harry have joined survivors and families of the Westminster terror attack at a multi-faith service at Westminster Abbey.

Around 1,800 people joined the Service of Hope in central London, two weeks after Khalid Masood killed four people and injured 40 others during a terror attack on March 22.

The service, lead by the Dean of Westminster, the Very Reverend John Hall, was held a short distance away from the scene of the attack.

Witnesses to the atrocity and members of the emergency services involved in the response effort were among the congregation and lined the front row.

The Duke laid a wreath of flowers at the Innocent Victims memorial outside the Abbey as they arrived.

The Royals were greeted by London Mayor Sadiq Khan and Metropolitan Police Acting Commissioner Craig Mackey.

Labour leader Jeremy Corbyn, Commons speaker John Bercow and Home Secretary Amber Rudd were also seen taking their seats ahead of the service.