An aviation package under which the intelligence agencies in Britain will be able to access better passenger information from airlines is among those expected to be agreed by the British Prime Minister David Cameron.

It is understood that the measure is one that Mr Cameron is likely to put forward as part of a package of tougher anti-terror measures following late-night coalition talks there.

Other plans include tougher measures to seize the passports of individuals and increased deradicalisation efforts, including making the Prevent programme compulsory.

The teams were also negotiating about plans to temporarily ban British jihadis returning to this country.

They are also under pressure from UK Labour to return to control orders under which suspects are kept under virtual house arrest.

David Anderson, the independent reviewer of terrorism, has called for some powers of the control orders to be returned after criticism of the TPIM (Terrorism Prevention and Investigation Measures) system that replaced them.

In particular, the parties are discussing exclusion zones for suspects and controversial powers to relocate individuals two or three hours from their homes.

They had not come to an agreement on those areas yet.

The Lib Dems are keen to maintain civil liberties but the Government is under pressure to act after Britain’s terror threat was raised to severe.

Mr Cameron promised tougher measures that he will lay out in a statement to the House of Commons later today.

A UK government source has said: "The government is considering a range of measures to keep the country safe in the face of an increased threat level from Islamist extremism. The areas include making it harder for potential foreign fighters to travel abroad by making it easier to remove their passports through additional temporary seizure powers at the border."

"We are also looking at stopping British citizens from re-entering the country if they are suspected of terrorist activity abroad."