Opting into the controversial European arrest warrant (EAW) will prevent Britain becoming a "honeypot" for European fugitives, the Home Secretary has said.
Opponents of the EAW cite concerns it is too easy for UK citizens to be extradited and some Conservative backbenchers have hinted at a revolt when the proposal comes to a vote in the Commons.
ITV News Political Correspondent Libby Wiener reports:
The shadow home secretary has pledging Labour's support in a promised Commons vote on opting back in to the European Arrest Warrant.
Yvette Cooper said she was "pleased" that the Home Secretary was supporting the measure as Labour believed it was needed to protect Britain's borders and public safety.
Failing to do so would "much harder to deport foreign criminals and would also make it more difficult for us to bring British citizens who have committed crimes back to our country to face justice", she said.
Former immigration minister Damian Green said it would be "really dangerous" if Britain failed to opt back in to the warrant:
We would be the country in Europe where all Europe's criminals and terrorists would be inclined to come, because not only would we not be able to get terrorists back from other countries as quickly as we can now ... but also rapists, murderers, child molesters and so on would think Britain is probably the place to go where you'd have most chance of not being convicted of crimes you committed in the rest of Europe.
Home Secretary Theresa May will use her speech to the Tory party conference to set out a package of measures to tackle Islamist extremists.
Under the plans, new "banning orders" would allow the authorities to outlaw extremist groups, even if they did not pose a terrorism threat.
Hate preachers could be targeted with "extremism disruption orders (EDOs)", which would allow the courts to restrict the movement and activities of individuals to prevent the risk of violence or public disorder.
The two new orders will be included in the Tory manifesto for the next election, but Mrs May will also set out a new cross-government strategy to tackle extremism.
Home Secretary Theresa May said the Crown Prosecution Service is reviewing the case against Ashya King's parents.
During a statement in the House of Commons, Ms May said:
I understand the CPS are indeed reviewing this issue as we speak.
The Home Secretary has said the perpetrators of child sexual exploitation in Rotherham "must be brought to justice".
Theresa May told MPs that although it would not be appropriate to discuss ongoing investigations "in detail", there are a number of investigations underway "covering several hundred victims" in South Yorkshire.
Home Secretary Theresa May has called the Rotherham scandal "a complete dereliction of duty".
Answering an urgent question in the House of Commons, May told MPs the report showed "the appalling failures of Rotherham Council and by the police and other agencies to protect vulnerable children."
"It makes for shocking reading," she added.
Home Secretary Theresa May has said that South Yorkshire Police Commissioner Shaun Wright should "heed" calls for him to resign.
She said it was not her job to "hire and fire police commissioners," but added that Mr Wright "has real questions to answer".
She said the report into child sexual exploitation in Rotherham exposed "appalling failure by the council, by the police and other agencies".
The two inquiries, announced by Home Secretary Theresa May, will investigate alleged child abuse by MPs and wider public institutions.Read the full story ›
Britain's child sex abuse investigation body needs more access to phone and internet records so it can better investigate crimes, Theresa May has said.
The Home Secretary spoke ahead of reports the Government is due to pass emergency laws requiring phone companies to store text, call, and web use data.
Her comments came after it emerged the Child Exploitation and Online Protection Centre (Ceop) made fewer arrests last year than the previous year.
A review of undercover policing announced by the Home Secretary will initially focus on the Metropolitan Police's Special Demonstration Squad, a top secret unit that operated for 40 years before being disbanded in 2008.
It will also look at the activities of the National Public Order Intelligence Unit, which is not part of the Met but undertook similar tasks.
The investigation will look at a variety of issues, including what kind of undercover policing was undertaken, whether evidence relevant to criminal cases was kept secret and whether any convictions may be unsafe because undercover police activity was not revealed.