The Prime Minister has told MPs that 27 Britons had been confirmed dead in the Tunisia beach massacre.
An RAF C-17 carrying the coffins of eight British victims of the Tunisia terror attack has left for the UK.
The plane is expected to arrive at RAF Brize Norton later this afternoon.
Bank of England Governor Mark Carney has said risks to the UK banking system have increased because of the Greek crisis.
Mr Carney said the Bank was prepared for the possibility of Greece leaving the Eurozone.
In a half-yearly review of risks, the Bank of England said it was ready to "take any actions required" in response to the crisis.
Events in Greece have tipped the balance - the outlook has worsened.
The footprint of Greek banks in the United Kingdom is tiny compared with the size of our economy. In contrast, our economic and financial exposure to the euro area is considerable.
Greek Prime Minister Alexis Tsipras will accept all his bailout creditors' conditions, according to a letter seen by the Financial Times.
The current bailout extension offer expired at midnight, but the letter to the heads of the European Commission, International Monetary Fund and European Central Bank could allow a new bailout to be negotiated.
In the two-page letter, Mr Tsipras accepts the previous offer but with a number of conditions, including keeping a VAT discount for Greek islands.
ITV News' Europe Editor James Mates is in Greece reporting on the ongoing crisis.
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At least 20 members of the Egyptian security forces have been killed in suspected militant attacks in the country, military officials have said.
A police station and five checkpoints were targeted in North Sinai, with a car bomb exploding at one military post.
An army spokesman said 22 of the attackers were killed during the assaults.
A Sinai-based insurgency has killed hundreds of policemen and soldiers since the Egyptian army toppled Islamist president Mohamed Mursi after mass protests against his rule in 2013.
The RAF repatriation flight is about to start loading the coffins of those killed in the Tunisia beach terror attack, ITV News correspondent Neil Connery reports.
The family of Christopher and Sharon Bell - a couple from Leeds murdered in a terrorist attack on a beach in Tunisa - said in a statement that they are "deeply saddened" by their deaths.
We are deeply saddened by the loss of both mum Sharon and dad Christopher who were taken from us during the terrorist attacks in Tunisia.
Currently we have very little information surrounding the circumstances of the tragedy and we are working with the authorities to gather as much information as possible.
As a family we are grieving and we would ask that our privacy be respected at this difficult time. Our thoughts are with all those affected by the tragedies.
A convoy understood to be carrying the coffins of the victims of the Tunisia terror attack has arrived at Tunis base for repatriation.
ITV correspondent Neil Connery is at the scene.