ACCA International accountancy body UK ICAEW The Institute of Chartered Accountants in England and Wales. Inland Revenue News and information on tax and national insurance matters in the United Kingdom. CIOT The Chartered Institute of Taxation. UK Trade & Investment The inward investment agency for the UK. London First Centre The inward investment agency for London. OPRA Occupational Pensions Regulatory Authority. DTI The Department of Trade and Industry. Contains a range of information for consumers, businesses and employees. HM Customs and Excise HM Customs and Excise information service. London Chamber The London Chamber of Commerce and Industry.