The Christmas festivities in Greenwich begin with the local school children's lantern procession and the switching on of the Christmas lights.
The procession will start at 4pm in front of the Discover Greenwich Visitor Centre at the Old Royal Naval College and will wind its way to the market.
The big countdown is at 4.45pm, led by Sarah Jane Honeywell from CBeebies and characters from this year's Greenwich Playhouse panto.
There is also the chance to join in singing Christmas carols, meet Father Christmas in his grotto and shop late through to 7pm.
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