Neil Gordon Kinnock, Baron Kinnock, is a Welsh politician who served as Leader of the Opposition and Leader of the Labour Party from 1983 to 1992. He served as a Member of Parliament (MP) from 1970 to 1995, first for Bedwellty and then for Islwyn. He was Vice-President of the European Commission from 1999 to 2004. Kinnock was considered to be on the soft left of the Labour Party.

The Leader of His Majesty's Most Loyal Opposition, more commonly referred to as the Leader of the Opposition, is the person who leads the Official Opposition in the United Kingdom. The position is seen as the shadow head of government of the United Kingdom and thus the shadow prime minister of the United Kingdom.