Police have cordoned off an area in Ealing Broadway after a young man died in a gang fight and another remains in hospital after he was thought to have been stabbed.
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Londoners are being warned to expect transport delays over the Easter break, with roads jammed and some rail services shut down.
The lukewarm reaction comes a week after the prime minister name-checked the mayor as a possible successor.
At 15 metres high, make a dramatic entrance at London's Hayward Gallery.