Police and other authorities can now be prosecuted over deaths in custody in England, Scotland and Wales. Legislation which has now come into effect means police forces, the MoD, UK Border Agency and private firms managing people held in custody can be prosecuted for corporate manslaughter.
The main legislation came into force three years ago but ministers gave public bodies which hold people in detention until now to prepare for it. Campaigners have welcomed the change. Corporations can already be prosecuted for corporate manslaughter or for the equivalent offence (corporate homicide) in Scotland.
The extension of these offences to public bodies involved in detention means they could be prosecuted if they failed to ensure the safety of someone in their care.

Long before the criminal trial and the Inquest, Mikey’s mother Claris and other family members issued claims against the Chief Constable of West Midlands Police because of Mikey’s death.
from the Friends of Mikey Powell Campaign for Justice