There were three officiants at the Royal Wedding. The service, which started at 11.00am, was conducted by the Dean of Westminster, the Very Rev John Hall.
The Archbishop of Canterbury, Rowan Williams, performed the marriage ceremony of Prince William and Kate Middleton.
The Bishop of London, the Right Rev Richard Chartres, gave the address.
The Archbishop's and the Dean's roles follow precedent. The Bishop of London is a personal friend of The Prince of Wales and his family (as well as being Dean of the Chapels Royal). He has known Prince William personally for many years - he confirmed Prince William and officiated at the Diana, Princess of Wales Memorial Service.
Music for the ceremony wasunder the direction of James O'Donnell, the Organist and Master of the Choristers of Westminster Abbey and an internationally recognised organist and conductor.
For detailed biographies of the three main officiants, click the links below: