turn king's/queen's evidence

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turn king's/queen's evidence

To provide evidence in court implicating other parties involved in the crime for which one has been charged, in order to receive a reduced sentence or to avoid prosecution altogether. Primarily heard in UK. We're leaning on him pretty hard, so we think he'll turn king's evidence and finger his accomplices.
See also: evidence, turn

turn King’s/Queen’s ˈevidence

(British English) (American English turn State’s ˈevidence) give information against other criminals in order to get a less severe punishment: One of the gang turned State’s evidence and identified at least three others involved in the fraud.
See also: evidence, turn
References in periodicals archive ?
And gangsters who turn Queen's Evidence could have their sentences cut by more than two-thirds --or even win immunity from prosecution -if they shop the gang leaders.
Vince Bradish was on the run for eight months but Roberts was arrested a few days after the foiled raid - and agreed to turn Queen's evidence.
Senior judges were told 30,000 pages of material and 760 interview tapes have been amassed as part of Gary Haggarty's agreement to turn Queen's evidence.
I was made to sign them because I was being held over a barrel if I did not turn Queen's evidence.
Criminals who turn Queen's Evidence could win immunity from prosecution, or have their sentence heavily reduced if they shop their criminal godfathers under a new Bill published today.
Today's White Paper on plans for a so-called 'British FBI' -the Serious Organised Crime Agency -will set out proposals for a national witness protection scheme to encourage gang members to turn Queen's evidence.