The Victoria Line returned to normal this morning after concrete was pumped out of the signalling room.
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Temperatures soared to 27.9C in Northolt shortly after midday on Thursday, making it the warmest April day for 69 years.
The South East will enjoy the best of the weather and along with Paris will be the hottest place in Europe.
The Foreign Secretary insisted police had to "come down like a ton of bricks" on gang leaders as he warned against "going soft".