Dealers Layne Campbell, 21, and Danny Back, 25, sold 95 per cent pure cocaine to clients over the phone before passing on the packages to their female runners for delivery.

Detectives watched as one of the women, Campbell's girlfriend Louise Tolan, 38, returned to the home in Chauncer Gardens that she shared with Campbell and her young children and sold drugs to a client.

Jessica Wadman, 22, Erica Mathies, 20, Michelle Brown, 38, and Tolan's daughter Courtney Bailey-Tolan, 19, were also seen dealing cocaine nine times between January and April last year.

After the deals Campbell and Back would meet the women to collect the cash.

The London Crime Squad (LCS) raided the homes of Campbell, Back, Tolan, Wadman and Brown on Friday, April 15.

All five were arrested and £1,500 of cash was seized from Campbell's Gucci bag.

Mathies and Bailey-Tolan were arrested on May 26 and June 6, respectively.

The group appeared at Croydon Crown Court where Wadman, of Spitfire Road, pleaded guilty to conspiracy to supply a class A drug on May 1.

Back, of Crispin Crescent, admitted the same offence on Friday, May 22 and Bailey-Tolan pleaded guilty on June 17.

Campbell, Tolan and Mathies, of Defiant Way, pleaded guilty on Friday, July 31.

All six were sentenced at Croydon Crown Court on Friday, September 25.

They received: -Campbell: four years in jail;

-Back: three years, four months in jail;

-Tolan: two years in jail;

-Wadman: two years in jail;

-Mathies: 18 months' imprisonment, suspended for two years and,

-Bailey-Tolan: 15 months' imprisonment, suspended for two years.

Campbell's sister, Brown, of McIntosh Close, was sentenced to one month's conditional discharge on May 22 at South London Magistrate's Court after she pleaded guilty to possession of Class B drugs.

Detective Constable Paul Fagence, of the LCS, said: "The gang was peddling dangerous, high-purity cocaine.

"In total, we seized around £3,000 found at the gang's homes.

"This is money which goes back into the criminal justice system and fighting crime."