Police, fire and ambulance services in England should share control rooms to improve their response to 999 calls, a Home Office minister has said.
Mike Penning said it did not “make sense” to have different premises.
It comes as new plans are published to get the services working more closely.
There are also proposals for police and crime commissioners (PCCs) to oversee fire brigades, which could include choosing an officer in charge of hiring and firing fire and police staff.
This top officer post would be open to senior officers from both the police and fire service. They would hold the rank of chief constable – and to allow this the government would remove the current rule that holders of the rank must have served as a constable.
PCCs would get responsibility for fire services “where a local case is made”, the Home Office said.
In most parts of England, police, fire and ambulance services have separate control centres and when someone rings 999, they have to tell an operator which service they need.
Emergency services in some areas – including Northamptonshire and Hampshire – are already working on joint schemes, but the Home Office wants more and is introducing a “statutory duty” on the three services to collaborate.
In Northamptonshire, police, fire and ambulance services are sharing “training, premises and a joint operations”, the Home Office said. In Hampshire, senior police officers now operate out of the Hampshire Fire and Rescue HQ.
Mr Penning, minister for policing and fire, said: “It simply doesn't make sense for emergency services to have different premises, different back offices and different IT systems when their work is so closely related and they often share the same boundaries.”
He said he would also like PCCs to take responsibility for their local ambulance service, but at this stage the Home Office is only planning to extend PCC powers to fire brigades.
The plan for PCCs to oversee fire services was called “dangerous” by the Fire Brigades Union (FBU) when it was suggested last year.
It said the move would be a “costly experiment with no guarantee for success”.
Steve White, chairman of the Police Federation of England and Wales, said: “Officers from both emergency services already do pull together, working alongside week in, week out, as has been evidenced most recently by the appalling floods.
“So why the burning need to change the law? It's like using a sledgehammer to crack a nut.”
Paul Hancock, Cheshire's Chief Fire Officer and president of the Chief Fire Officers Association, said combining control rooms was “absolutely a good thing”.
He said there were “fantastic examples” of emergency services working together across the country, and he welcomed PCCs taking control of fire services when there was a “local case”.
But he said there were “some concerns” within the fire service about losing its “unique brand and reputation” due to being associated with the police.
The government's plan also includes abolishing the London Fire and Emergency Planning Authority and giving its responsibilities to the Greater London Authority.