Toby Sadler joined police officers closing down a cannabis factory in Dulwich as part of the Met's Operation Hawk.
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Pregnant woman who was labour has had her "phone snatched while calling for and ambulance to hospital".
It will be increasingly cloudy this evening, with sporadic outbreaks of rain or drizzle spreading in during the first half of the night.
A derelict north London garage has gone on sale for £360,000 - more than the cost of a flat on the same road.