Prime Minister David Cameron and German Chancellor Angela Merkel father spoken by phone and agreed progress has been made in Britain’s renegotiation with the EU.
Many 10 said both leaders saw there was genuine goodwill across Europe for Mr Cameron’s desires, but accepted there was work to do to find solutions.
A spokesman said they also discussed migration and the Syria talk they will co-host in London next week.
The UK is to hold an in-out referendum on EU membership by the end of 2017.
Mr Cameron has swore to secure a better deal for the UK in the European Union as a prelude to the referendum, in which voters ordain be asked whether they want to stay in the EU or leave.
There has been theory that the PM could call the poll as early as June this year if he comes the backing of the EU’s other 27 leaders for his reform demands at a summit in February.
Downing Thoroughfare also said that while discussing migration during their phone, both Mr Cameron and Mrs Merkel agreed that a strong external European wainscoting and close co-operation with Turkey were vital.
And they favoured that the Syria conference had “the potential to deliver a substantial increase in both monetary and practical support for refugees that would help them to delay in the region”.
On Monday, Mr Cameron held talks on the EU with his Irish counter rt Enda Kenny.
Mr Kenny ventured his personal view was that a deal was possible in February but “he couldn’t touch upon for the other countries around the table”.
- Budgetary governance: Securing an explicit recognition that the euro is not the only currency of the European Combination, to ensure countries outside the eurozone are not disadvantaged. The UK wants safeguards that it discretion not have to contribute to eurozone bailouts
- Competitiveness: Setting a target for the reduction of the “weigh down” of excessive regulation and extending the single market
- Immigration: Restricting access to in-work and out-of-work advances to EU migrants. Specifically, ministers want to stop those coming to the UK from demanding certain benefits until they have been resident for four years
- Leadership: Allowing Britain to opt out from further political integration. Giving excellent powers to national rliaments to block EU legislation
Referendum timeline: What on happen when?
Guide: All you need to know about the referendum
Q&A: What does Britain insufficiency from Europe?
More: BBC News EU referendum special