Prime Minister David Cameron was on Saturday urging Britain's overseas territories to do more to tackle tax evasion at a meeting in London ahead of next week's G8 summit in Northern Ireland, according to DPA. Britain has made updating international tax rules, transparency and opening up trade the key themes of the two-day summit it is hosting in Enniskillen from Monday. Cameron promised that Britain would take the lead in ending tax secrecy. In an interview with the Guardian, he said he would introduce a new central register of companies' owners which would be available to tax authorities. The premier has previously acknowledged that Britain needs to "get its own house in order" as many of its overseas territories and crown dependencies such as Bermuda, the British Virgin Islands, Jersey and the Cayman Islands are regarded as tax havens. He is expected to ask the outposts to sign up to the Organisation for Economic Co-operation and Development's (OECD) convention on mutual assistance in tax matters.