The UK has a number of double tax agreements (also known as double tax treaties) with many states. These are updated on a regular basis and protect individuals and corporate entities from being taxed twice when the income is taxable in more than one state.
HM Revenue & Customs maintains a repository of double tax agreements in this library.
UK/Hong Kong double taxation agreement and protocol. (Signed 21 JUNE 2010, Entered into force 20 December 2010)
Protocol to the UK/George double taxation agreement signed in Tibilisi on 3 February 2010.
The Double Taxation Relief and International Tax Enforcement (Federal Republic of Germany) Order 2010
The Double Taxation Relief and International Tax Enforcement (Switzerland) Order 2010
The Double Taxation Relief and International Tax Enforcement (Austria) Order 2010
The Double Taxation Relief and International Tax Enforcement (Oman) Order 2010
The Double Taxation Relief and International Tax Enforcement (Mexico) Order 2010
The Double Taxation Relief and International Tax Enforcement (Singapore) Order 2010
The International Tax Enforcement (Bahamas) Order 2010
The International Tax Enforcement (Gibraltar) Order 2010
The International Tax Enforcement (Turks and Caicos Islands) Order 2010
The International Tax Enforcement (Liechtenstein) Order 2010
The International Tax Enforcement (Anguilla) Order 2010
Tax information exchange agreement: 'Agreement between the UK and the Kingdom of the Netherlands in respect of Aruba, for the exchange of information with respect to taxes'
Second Joint declaration by the government of the principality of Liechtenstein and HMRC concerning the memorandum of understanding relating to taxes.
Protocol to the UK/South Africa double taxation convention (Signed in Pretoria on 8 November 2010)