The United Kingdom (UK) is an important political and economic power in Europe and the world. It has the second-largest economy in the European Union (EU) with a nominal 2005 gross domestic product (GDP) of $2.2 trillion. The UK economy grew by 1.8 percent in 2005, with growth of 2.2 percent forecasted for 2006. While the UK has been a member of the EU since 1973, it does not participate in the European single currency, the Euro.

The UK is the largest producer of oil and natural gas in the EU. However, after years of being a net exporter of both fuels, the UK became a net importer of natural gas in 2004. Government estimates also predict that the country will become a net importer of oil by the end of the decade. Production from UK oil and natural gas fields peaked in the late 1990s and has declined steadily over the past several years, as the discovery of new reserves has not kept pace with the maturation of existing fields. In response, the government has begun a three-pronged approach to address the predicted domestic shortfalls: 1) increasing domestic production through efficiency gains and the exploitation of marginal fields; 2) establishing necessary import infrastructure, such as liquefied natural gas (LNG) receiving terminals and transnational pipelines; and 3) investing in energy conservation and renewables.