You likely have heard of a handful of political parties in the United Kingdom, but as of August 2019 the Electoral Commission showed the number of registered political parties in Great Britain and Northern Ireland as 408. The vast majority of those are without representation in the House of Commons. Parliamentary parties in the UK right now are the Conservatives, Labour Party, Scottish National Party, Liberal Democrats, Democratic Unionist Party, Sinn Féin, Plaid Cymru, Social Democratic and Labour Party, Green Party, and the Alliance Party of Northern Ireland.