Security firm G4S has apologised for overcharging the Government for its provision of electronic tagging services, calling its actions "unacceptable".
The group's chief executive Ashley Almanza said:
The way in which this contract was managed was not consistent with our values or our approach to dealing with customers.
Simply put, it was unacceptable and we have apologised to the Ministry of Justice.
We remain committed to working with the Ministry and the UK Government to resolve this matter and to provide enhanced oversight of service delivery and contract performance.
More top news
A court has ruled that the original coffin in which Lee Harvey Oswald was buried belongs to his brother, not the undertaker's that sold it.
Manic Street Preachers lyricist went missing nearly 20 years ago but mystery still surrounds exactly what happened to him.
Deputy Prime Minister admitted he wanted to hit David Cameron on more than 20 occasions on late-night chat show 'The Last Leg'.