'A prominent think-tank has claimed a new satellite system being introduced to track offenders in Scotland should be directly controlled by police and probation officers rather than private security firm G4S.

The Future of Corrections report, due to be published by Policy Exchange today, said the lack of competition in the UK market when it came to contracts for electronic tagging was costing taxpayers hundreds of millions of pounds.

The scathing assessment comes just days after the Scottish Government awarded a five-year, £13 million contract to G4S. The contract will start in April next year and involve using GPS technology to track criminals wearing tags on their ankle or wrist.'

Read more: UK Government Allows Private Security Firm to Track Offenders