Great Britain

The British team, managed by George McNeil, won the inaugural Baseball World Cup in 1938, beating the United States by four games to one in the series hosted in England. This series was subsequently declared the first world championship of amateur baseball by the International Baseball Federation, and so Great Britain became the first amateur world champions. With the backing of Sir John Moores a team was set to compete in the 1939 series, in Havana, as defending champions. In doing so they would have become the first national representative team to compete outside of the United Kingdom but the outbreak of the Second World War interrupted the development of baseball in the United Kingdom, the team withdrew and the sport entered into decline domestically. So severe was the impact of the Second World War on baseball in the United Kingdom that it was over 70 years before the team qualified for another world championship event, when they reached the 2009 Baseball World Cup by virtue of its second-place finish at the 2007 European Baseball Championship.

In 2007, the Great Britain team won the silver medal at the European Baseball Championship, finishing top of Group B and only losing two games in the tournament. It ultimately finished second overall to the Netherlands. This marked Britain's highest placing in the tournament since its first entry into the event in 1967, when it also finished second.

Prior to 2007 the team's showing in the European Baseball Championship was generally limited to finishing in the lower half of the standings, which often resulted in relegation to the secondary tournament known as the European Baseball Championship Qualifier (sometimes referred to as the 'B-Pool'). In 1988 and 1996 Great Britain hosted and won the Qualifier, thereby returning to the main European Championship event the following year (sometimes referred to as the 'A-Pool'). Since the silver medal in 2007, Great Britain has on occasion had to repeat the process of qualification through the B-Pool.

By winning the silver medal in 2007 Great Britain qualified both for the 2009 Baseball World Cup and for the Final Qualifying Tournament in Taiwan for the 2008 Summer Olympics. However, a lack of funding including a refusal by UK Sport to provide any backing meant it was forced to withdraw from the Final Qualifying Tournament and was replaced by Germany. This was the Great Britain team's last chance to qualify for an Olympic baseball competition due to the earlier decision by the International Olympic Committee (IOC) to remove baseball from the Games after 2008. That decision – announced one day after London had been awarded the 2012 Olympics on 6 July 2005 – also meant that the Great Britain baseball team would not have the opportunity to play in front of a home crowd in the 2012 London Olympics and to promote the sport in the United Kingdom. It also meant that the team ceased to receive elite funding from bodies such as UK Sport.

At the 2009 World Cup – held simultaneously in various countries around Europe – Britain qualified out of the first group stage before eventually finishing 15th overall. Following the World Cup, in October 2009 the IBAF announced a new set of world rankings in which Britain rose to 21st., though they since dropped to 32nd as of 2017. Great Britain was invited to compete in the qualifying round of the 2013 World Baseball Classic. In 2016 Hall of Fame inductee Trevor Hoffman joined the coaching staff, honouring his maternal English ancestry, with his grandfather having been a professional footballer in the Football League. Great Britain competed in the qualifying round of the 2017 World Baseball Classic, where it was defeated in the finals by Team Israel.

On September 20, 2022, Great Britain qualified for its first World Baseball Classic by defeating Spain 10–9 in 10 innings in Regensburg, Germany.