We've taken 30 calls since strike action began at noon and we're still urging Londoners to Take Extra Care http://t.co/aQPiRqXM1Y
More top news
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.