Robbie Williams will turn on the Christmas lights later this evening at Oxford Street in London.
The 38-year-old from Stoke-on-Trent will be joined by Leona Lewis and Lawson.
Tens of thousands are expected to attend the event, which will be ticketed for the first time.
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Young people from disadvantaged backgrounds have been helped by sports charity StreetGames, to go to the British Athletics Championships.
Very high pollen during warmer drier spells this week.
Heavy showers in the north might give a risk of thunder at first.