The visiting British Prime Minister Mr. David Cameron pitched for further opening up of financial services and retail sectors by India for Britain. He said this move will benefit both the countries. Participating in a panel discussion on Indo-UK trade in New Delhi on Thursday Mr. Cameron invited the captains of Indian industry to invest in Britain and vice-versa. He said, these kinds of decisions are sometimes difficult to take as they require taking on vested interests. The dignitary said, his country is re-building some of its manufacturing industries, for which investment from India would be welcome. The British Prime Minister sought India's help to expand economies in Europe, where some of the countries are facing the sovereign debt crisis. Seeking cooperation in the Indian education, Cameron said, Britain has some of the best universities of the world. On another count, he said Britain has got expertise in civil nuclear power and has a very strong defence industry to share the expertise. To a query over whether capping immigration will hamper investment from India, Business Secretary Vince Cable said agreement between coalition partners of the ruling regime in Britain have agreed to have pact on immigration outside the European Union, but it will not hamper investment from India. Earlier, Cameron had said in an interview that he wanted to see immigration reduced to tens of thousands a year-the average levels seen in the 1990s.