A gang believed to have supplied class A drugs to West End clubbers have been arrested after a six-month operation.

Four people, who are thought to have dealt cocaine to partygoers, have been tracked by the Metropolitan Police's Clubs and Vice Unit as part of Operation Fairsailing since April this year.

A 24-year-old man was arrested near Marble Arch last Thursday on suspicion of conspiracy to supply class A drugs, and was remanded in custody. A house in Camden was searched later that day, where a man and a woman, both in their late 40s, were arrested for the same offence.

Detective Superintendent Dave Eyles, in charge of operations at the Clubs and Vice Unit, said: "These three have been running a highly organised, and what we believe to be a highly profitable, cocaine supply business. Our investigation has uncovered that the three worked a shift system, with one of them always available to travel anywhere within the M25 to supply cocaine."

A fourth gang member, a man in his mid-20s, handed himself in to a central London police station and was also arrested on suspicion of conspiracy to supply class A drugs.

Det Supt Eyles added: "Intelligence leads us to believe that the drugs are being bought by people using them as part of a night out clubbing or to sell on to others in that environment. We know that they have been dealing within the M25 but particularly close to some of the well-known West End clubs.

"London has a world-recognised nighttime economy. The vast majority of licensees work hard to prevent this sort of recreational drug use from taking place in their venues, something we fully support.

"Through arresting these four, I believe we have disrupted an organised gang, who have controlled much of the sale of cocaine in this environment for a substantial period of time."