Campaigners fighting fire station closures claim to have unearthed a major flaw in the plans.
New figures reveal that, in 40 neighbourhoods across the capital, firefighters will reach emergencies outside the official response time.
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The British Open Water Swimming Championships have kicked off at the Serpentine in Hyde Park.
London's mayor Sadiq Khan has warned that a split or failure to unite after the bruising leadership contest could kill off Labour forever.
Former Labour frontbencher Lord Mitchell of Hampstead has launched a scathing attack on Jeremy Corbyn's leadership qualities.