If David Cameron still hopes to wrap up his European negotiations by tea time today, he's got an intense, caffeine-fuelled few hours ahead of him.
The Prime Minister left the European Council building just after 5.30am local time after meetings with Donald Tusk and President Hollande. A source said: 'It's hard going. Some signs of progress but nothing yet agreed and still a lot to do.' The talks went on for longer than many expected.
Cameron does need to look as though he has fought for these changes, but there are also reports that he is having to demand more from leaders so that his eventual deal isn't totally underwhelming.
He is currently pushing for 13 years of benefit restrictions on migrants, rather than the emergency brake lasting 7 years. He has another meeting with Tusk at 11.45 (10.45 GMT) to discuss the changes.