( CNN ) -- Britain 's David Cameron and Germany 's Angela Merkel restated their commitment to a strong Europe Friday , as they sought to show a united front in the face of Europe 's debt crisis . Their talks in Berlin come amid tensions between the two nations over how to restore financial stability in Europe . `` The United Kingdom has a great interest , and very sensibly so , in seeing the eurozone being strong , '' Merkel said . While Britain has some differences of opinion with Germany over the EU treaty and ways to boost competitiveness , she said , the two countries are tied by `` strong bonds of friendship . '' Both will work closely together ahead of a meeting of European leaders next month , she said . Britain is the biggest economy in Europe outside the 17-nation eurozone , which uses the euro as its currency , while Germany is the economic powerhouse within it . The pair have not always agreed on the best ways to tackle the current debt crisis , which has seen attention focused on Italy and Greece in recent weeks . Senior members of Cameron 's Conservative Party have been calling for more powers to be brought back to Britain from Europe , as EU treaty changes are made to ensure economic stability . Cameron , who has previously expressed concern that Europe 's difficulties are affecting Britain 's economic recovery , also downplayed divisions between the countries as he stood alongside Merkel . `` We have had a very good discussion between very good friends , '' he said . `` There are many things on which we are in absolute agreement . '' However they have not made progress on plans for a European financial transactions tax , Merkel acknowledged . Britain opposes such a tax , fearing it could disadvantage London as a global financial center . Cameron called for the deal reached at a summit in Europe on October 27 to be implemented as soon as possible . The plan includes a series of measures to address the crisis , including debt relief for Greece , new capital requirements for banks and plans to build a financial `` firewall '' around vulnerable euro area economies . `` A strong , successful and stable eurozone is in all our interests , '' Cameron said . `` We need this crisis to be resolved . Britain , like Germany , has a big national interest in that happening . '' And while the two do not agree on all matters , they can discuss and accommodate each other 's views , he said . Cameron met earlier Friday with European Council President Herman Van Rompuy and European Commission President Jose Manuel Barroso in Brussels . Global markets have been volatile , as political turmoil linked to the financial crisis has forced a change of government in both Greece and Italy in the past week .
David Cameron is in Berlin for talks with German Chancellor Angela Merkel . Cameron : `` A strong , successful and stable eurozone is in all our interests '' The two countries are among the largest economies in Europe . Europe is in the grip of a debt crisis that has shaken market confidence .