A convicted gangland killer from Nottingham has been found guilty on two counts of conspiracy to cause misconduct in public office.
Gunn used a corrupt detective to stay ahead of the law
Colin Gunn, 40, used a corrupt detective to get information on police inquiries into his network.
He is already serving a life sentence for conspiring to murder Lincolnshire couple John and Joan Stirland in 2005.
He was sentenced to nine years in jail on each count from the latest trial, to run alongside the life sentences.
Gunn did not appear in court, having sacked his legal team the day before the trial started.
The court heard how Gunn used an intermediary to contact a corrupt detective, Charles Fletcher.
Fletcher was jailed in 2006 after he admitted making regular searches of police computers for information that the prosecution said would help Gunn lay low.
The jury was told that Gunn sent orders to Fletcher through Jason Grocock - a friend and associate who ran Limey's clothing store in Nottingham city centre.
Grocock would then send Gunn's demands to Fletcher, 27, who had worked in the shop before joining Nottinghamshire Police as a trainee detective constable in 2001.
Fletcher, Grocock and Phillip Parr, another Nottinghamshire Pc, have already admitted their part in the conspiracy.