UK prime minister David Cameron makes his final appeals to EU leaders to support a new membership deal for Britain, ahead of this week's leaders' summit in Brussels. As Joel Flynn reports, the odds could be stacking against him - as could the cost of a possible 'Brexit'.
It might look like any other Brussels meeting - but for David Cameron this week is the big one. A European leaders' summit will debate concessions for Britain as it tries to renegotiate the terms of its membership of the European Union. That's ahead of a referendum on whether it will stay in it, something Cameron wants to do. But, in the words of European Parliament President Martin Schulz, a new deal won't be easy. SOUNDBITE: European Parliament President, Martin Schulz, saying (English): "Such political operations are always fragile. We have to find a compromise between 28 member states and then a compromise between the 28 member states and the Commission and the Parliament as European institutions." Cameron needs concessions from Europe, in particular on migration. But when it comes to voting, it's all about image. Talk in the UK is already hitting fever pitch. British royalty in the form of Prince William has thrown his weight behind staying in the Union. Celebrities too having their say, including British actress Emma Thompson, speaking at the Berlin Film Festival. SOUNDBITE: Actress Emma Thompson, saying (English): "Of course I'm going to vote to stay in Europe, are you kidding? Oh my God, of course. It would be madness not to, that's a crazy idea not to. We should be taking down borders, not putting them up." While the In campaign might be benefitting from high profile backers though, opinion polls tell a different story. According to one of the latest, there's been a huge rise in those who want Britain to leave the EU. Despite doubts about the poll's accuracy, this will be a worry - for companies as well as Cameron. The latest cost estimate of a Brexit put the price at almost 500 billion pounds.