A signalling problem at Clapham Junction is the cause of the delays for commuters this morning. Travellers should expect delays of up to 30 minutes to and from London Waterloo. Delays expected until around midday. Visit National Rail for more info on how services are running.
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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.