The people of Hounslow have turned out in their hundreds for the 1st Battalion Welsh Guards' homecoming parade.
A 60 piece regimental band led 350 soldiers through the streets of the regiment's home town.
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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.