Text Santa, ITV's festive appeal to help six charities, culminates tonight with a special appeal show but throughout the day there have been fundraising events.
And stars of West End shows got in the spirit of things this afternoon, by singing Christmas carols in Leicester Square.
Here's our Arts and Entertainment Correspondent Lucrezia Millarini.
More top news
Dramatic CCTV footage has captured the moment a bus driver tackled a passenger to the ground in a street fight 'over the bus fare'.
Police are trying to track down a man who sexually assaulted a schoolgirl in Bethnal Green, after posing as a plumber to get into her flat
CCTV footage has emerged of a violent attack where a blind man was pushed onto the tracks at Chelmsford station