His work can fetch up to £5,000 and has been bought by the likes of Sir Elton John. But before he found fame and fortune, the graffiti artist Stik was homeless. That is why he's decided to donate tens of thousands of signed prints to help others just like him.
Nick Thatcher reports.
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A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.