Detectives from Trident seized five firearms and a large quantity of ammunition during a raid at an address in Gaywood Street off St George's Road on Tuesday morning.
The bedroom where the firearms were discovered
A 20-year-old woman has been arrested on suspicion of possession of firearms and is in custody at a south London police station. Inquiries are continuing.
The seized weapons and ammunition
"Trident is making a concerted effort to target those who supply guns to people who commit shootings and murder in the capital. This is just one of a number of on going operations of this nature. We hope that by identifying the suppliers of weapons will have a dramatic impact on shootings in London."
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