By Patrick Edrich The story of how a gang of drug dealers led by the notorious ‘Big Man’ flooded an entire city with heroin and cocaine has been blown wide open through a high-profile court case. The drug dealers hailed from the Merseyside area and worked with connections in Plymouth to deliver the Class As to the city using couriers who would travel back and forth collecting money and delivering the drugs. Once the drugs – with a street value of around £380,000 – arrived in the port city they would be distributed by a series of underlings. The Devonshire pushers also helped deposit the ill-go…