BBC News - Police invite security firms to bid for roles

Private security firms could investigate some crimes and patrol neighbourhoods under plans being drawn up for police in England and Wales.
The West Midlands and Surrey forces - two of England's largest - have invited bids for contracts from security companies, on behalf of all forces.
Other services provided privately could include supporting victims and managing high-risk individuals.
The Home Office stressed private firms would not be able to arrest suspects.
Critics have warned that privatising police services will mean that forces will be less accountable to the public.
BBC political correspondent Louise Stewart said the West Midlands and Surrey forces had been working together since early last year.
This is the first time the extent of their plans to involve the private sector in "middle and back office functions" have become clear.
They emerge at a time of 20% cuts to police budgets over four years, with Home Secretary Theresa May suggesting forces could protect "front-line policing" by delegating some work to the private sector.
They include responding to and investigating incidents, supporting victims and witnesses, managing high-risk individuals and patrolling neighbourhoods.
Ben Priestley, Unison's national officer for police and justice, told the Guardian: "Bringing the private sector into policing is a dangerous experiment with local safety and taxpayers' money.