page_title: 1999 European Parliament election in the United Kingdom
section_title: United Kingdom
hierarchical_section_title: 1999 European Parliament election in the United Kingdom / Results / United Kingdom
context_page_description: The European Parliament Election, 1999 was the United Kingdom's part of the European Parliament election 1999. It was held on 10 June 1999. Following the European Parliamentary Elections Act 1999, it was the first European election to be held in the United Kingdom where the whole country used a system of proportional representation. In total, 87 Members of the European Parliament were elected from the United Kingdom across twelve new regional constituencies.
  The change in voting system resulted in significant changes in seats. The Conservatives won double the number of seats they had won in the previous European election, in 1994, while the Labour Party saw its seats reduced from 62 to 29. The Liberal Democrats saw their number of seats increase to 10 from just 2 in the previous election. The UK Independence Party, Green Party and Plaid Cymru gained their first ever seats in the European Parliament.
  The House of Commons Library calculated notional seat changes based on what the result would have been if the 1994 European elections had been held under proportional representation. The notional results and seat changes are shown in the results box for this article.
context_section_description: The Conservatives doubled the number of seats from the last European election. Labour saw their 62 seats reduced to just 29. It was the first European Parliament election to be held since the change of United Kingdom government from Conservative to Labour two years earlier. The Liberal Democrats saw their number of seats increase to 10 from just 2 in the previous election. The UK Independence Party, Green Party and Plaid Cymru won their first ever seats in the European Parliament.
  These changes were largely due to the move to proportional representation from first-past-the-post. The House of Commons Library calculated that if the 1994 European elections had been held under proportional representation, Labour would have won 43 MEPs, the Conservatives 26, the Lib Dems 11, the SNP 3 and Plaid Cymru 1.
caption: Map showing most popular party by counting area.