More than 130 cannabis plants were discovered by police after they raided two cannabis factories.
Officers from the Addiscombe and Ashburton Safer Neighbourhoods Teams carried out the raids on Thursday morning.
In the first raid, more than 100 cannabis plants were found at a house in Brampton Road after police received a tip off from the local community.
A 54-year-old man was arrested on suspicion of growing cannabis.
Around 30 cannabis plants were found in the second raid at an address in Shirley Road. A 49-year-old man was also arrested on suspicion of growing cannabis.
Both men have been bailed to return to a south London police station in October, pending further enquiries.
Sergeant Scott Smith, from the Addiscombe Safer Neighbourhoods Team said: “We’ve been able to act on intelligence received from the local community and uncover two cannabis factories in the area.
“It really is important that local people keep on telling us if there is suspicious activity going on in their neighbourhood - either direct to police or anonymously through Crimestoppers.
“We can then act on that information and put a stop to criminal activity like we have done here to make their neighbourhood a safer place.”