The Thames Philharmonic Choir will be joined by internationally renowned soprano Kathryn Harries and a choir of homeless people in a service led by Canon Bruce Saunders.
This Christmas Crisis will be running its 37th Crisis Open Christmas, helping London's homeless receive support and friendship over the Christmas period with the help of thousands of volunteers from every walk of life.
Spaces are limited. To apply for tickets email David Coulthread on firstname.lastname@example.org
There is no charge for tickets although there will be a collection during the service.