As police approached the detached house, they noticed a man placing large bags inside a wheelie bin. He then ran off into Crystal Palace Park.
Sergeant Rob Goodwin from Bromley Police said: “This seizure represents a major and unexpected dent in the network of cannabis supply in the South East London area and was brought about through proactive local neighbourhood policing”.
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The Hammers moved to the Olympic Stadium in May leaving their old site to be developed for housing.
The first officer shouted "look!" as the drone passed next to the right wing at around 11,000ft above south-east London.
They found a sheepish looking ewe with a traffic cone on her head in the middle of a field.