This thanksgiving service at Westminster Abbey at the invitation of The Dean of Westminster, The Very Reverend John Hall is one of the school's key Centenary celebrations. The service will begin at 12 noon and last approximately an hour. During the service, the Right Rev and Rt Hon Richard Chartres, the former Bishop of London, will deliver an address. Also in attendance will be the Bishop of Kensington, Revd Dr Graham Tomlin, and the Vicar of St Dionis, Parsons Green, Revd Tim Stilwell. All Lady Margaret pupils and staff will attend.