They are calling it "the site we've been dreaming of for 20 years". 10,000 artefacts, many of them in incredible condition, have been dug up on a three-acre site in the City. And according to experts, it could transform our understanding of Roman London as Liz Wickham 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.