Toby Sadler joined police officers closing down a cannabis factory in Dulwich as part of the Met's Operation Hawk.
More top news
A campaign has been launched on social media to find the owner of a dog which was abandoned on a London bus.
Builders working on a residential and hotel scheme in Stratford City rescued a duckling after it was separated from the rest of its family.
British astronaut Tim Peake takes part in a test to see how a Mars rover handles when it's controlled from further away.