Police taking part in Operation Hawk, which is targetting cannabis factories, have made 93 arrests.
Officers have executed 28 warrants and found four cannabis factories in Bromley, seizing more than 2000 cannabis plants.
A firearm was also recovered in Sutton.
More top news
Renting a property in the capital will work out to be more cost-effective than buying one, according to new figures
Fresh with sunny spells replacing early murkiness.
A bright and sunny day tomorrow, but feeling distinctly cool and chilly tonight.