Mayor's Carol Service
Time Out says
An hour-long service of congregational Christmas carols performed by guest choirs, bibilical and secular readings and poems, and carols that the public can sing along with. The London Youth Choir and Big Phat Brass will perform. The event is free but tickets must be claimed in advance and guests are advised to arrive early to be sure of getting a seat. Doors open at 6.15pm.
Find more Christmas carol services in London