Land Securities have teamed up with Sing London to help raise money for the charity Centrepoint.
Song sheets and Santa hats provided.
This event not only brings some festive spirit to Bankside Mix but it is also helping to raise vital funds for homeless young people at Centrepoint. Donations will be welcome.
"We are delighted and extremely grateful that Land Securities is supporting Centrepoint at Christmas," says John Raynham, head of fundraising.
"Their support will have a huge impact bringing some fantastic festive cheer and will help raise vital funds for Centrepoint to support around 800 homeless young people each day not just with a safe place off the streets at Christmas but also with the long term support to turn their lives around for good."