Jay, Des and Jimmy.

evidence was collected by officers using secret video and audio surveillance as they bought heroin, crack cocaine and amphetamine while posing as addicts called Jay, Des and Jimmy.
Twenty-seven dealers were jailed, with five being recommended for deportation, while six other suppliers were given community sentences.
In a four-month crackdown, three officers recruited from other police forces went undercover to target crack and heroin dealers.
The crackdown began as Operation Nullify an undercover test-purchase sting where Once the surveillance and drugs deals were completed as Operation Nullify, between October 2005 and January 2007, Operation Nailed was launched with dozens of arrests being made.