The biggest supply of hard drugs in the Medway Towns was run like a corporate business, a court heard.

Known as the Stan Network, special offers were advertised by text and there were loss leaders “to get punters hooked”.

The head of the operation, which “saw off” any opposition, was Calvin Smith, who was so confident he would not be caught he regularly taunted police and flaunted the money he was making from the illicit trade.

But 24-year-old Smith’s reign ended this week at Maidstone Crown Court when he was jailed for 10 years. Seven of his “employees” were also sentenced.

Smith’s right-hand man Zouhir Ben-Kmayal, 28, was jailed for eight years.

Next-in-command Matthew Olujosun, 21, received six years, and his brother Martin, 17, was sentenced to four years, Karl Allen, 20, to three years, Lawrence Trowell and Steven Convey, both 18, each to two-and-a-half years, and Darren Hamilton, 17, to 18 months.

David Walbank, prosecuting, said the case involved street-level supplies of large quantities of heroin and crack cocaine.

He said: “There was no remorse or shame. On the contrary, they appeared to take a perverse pride in their activities, bragging about them and flaunting their ill-gotten gains.

“They appeared to consider themselves untouchable. They regularly taunted officers about their power to bring them to justice. They thought they could blag their way out of any consequences.”

Matthew Olujosun, of Woolwich, south east London; Martin Olujosun, of Hannah Close, Chatham; Convey, of Rochester Street, Chatham; Ben-Kmayal and Smith, both of no fixed address; Trowell, of Pagitt Street, Chatham; Hamilton, of Whyman Avenue, Chatham; and Allen, of Lonsdale Drive, Gillingham, admitted conspiracy to supply drugs between June 1 2007 and July 31 2008.