Poland and Germany both want Britain to remain a member of the European Union and will do everything to try and reach a compromise with Prime Minister David Cameron, German Chancellor Angela Merkel said on Friday.She said Germany and Poland see it as "desirable" that Britain remains part of the EU, adding that they would do everything to find a compromise with Britain that respects EU principles."When it comes to the subject of Great Britain we both share the opinion that we want to do everything to facilitate Great Britain's stay in European Union. We believe that from both a German and a Polish perspective it is desirable for Great Britain to remain in the European Union. So we will try to do everything, while respecting all principles which make up the European Union such as the principle of freedom of movement, to find a compromise for Great Britain with David Cameron," Merkel told a joint news conference in Berlin with Polish Prime Minister Beata Szydlo.Merkel added that Greece must be included in efforts aimed at securing the EU's external borders, which she said had "unfortunately has not been possible to achieve so far."Speaking at a news conference together with Merkel, Polish Prime Minister Beata Szydlo confirmed the position."Our joint position is that we need to do everything for the United Kingdom to remain in the European Union. For Poland it is important that the presented British proposals, which for us are largely acceptable, also consider the specifics of Polish conditions, the fact that Polish workers are working in the United Kingdom in large numbers and today we want to make sure that also their rights are appropriately secured," Szydlo said.Szydlo added that her country wants to take an active role in solving the migrant crisis in Europe.