The season gets thoroughly jolly as the sound of Christmas carol favourites ring out across Trafalgar Square.
More than 50 carol groups each sing for an hour beneath the Christmas tree in Trafalgar Square to raise funds for voluntary or charitable organisations.
Resembling something of a winter wonderland with the world-famous Christmas tree in place (an annual gift from Norway since 1947), the scene is set for an atmospheric recital of classics.
From Deck the Halls and Good King Wenceslas to Ding Dong Merrily on High and The Holly and the Ivy, various tuneful groups sing to raise much needed cash for charity.
With warming refreshments to be found nearby, all the ingredients are in place for the perfect countdown to Christmas.
Christmas Carols in Trafalgar Square is one of our London Christmas Moments. Find more magical moments for Christmas 2015.