Police suspect the men arrested are involved in an organised criminal gang.
Four men have been arrested at a drugs raid in Clapham.
Police uncovered what they believe to be 5kg of heroin, mixing agents, an industrial press and over £10,000 in cash after they raided a property in Clapham Manor Street.
The four men, all in their 30s, were arrested for conspiracy to supply class 'A' drugs.
Police suspect the men arrested are involved in an organised criminal gang.
During a search of an address in Woodford, north London - connected to the men arrested - police also recovered a large quantity of cash and money counting machines consistent with large scale money laundering.
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