The National Baseball League (NBL) is an amateur baseball league organised by the British Baseball Federation (BBF). The league is the top level of baseball in the United Kingdom, with the league champions also being named the overall National Champion in the United Kingdom. There is no official system of Promotion-and-Relegation; however several teams have moved up and down the structure freely.
Teams The NBL has fluctuated in size, with multiple teams joining and subsequently leaving. The BBF also allows multiple teams to come from the same club, as evident with the London Mets and Capitals both drawing from the same pool of players (although there are restrictions on players from a club playing with multiple teams in the same season). +2026 teamsTeamLocationBallpark Croydon Pirates Croydon Roundshaw Playing Fields Essex Arrows Waltham Abbey, Essex Townmead Playing Fields Herts Toucans Hemel Hempstead, Hertfordshire Grovehill BallparkLeicester Blue SoxLeicester, Leicestershire N/ALiverpool TrojansLiverpool, MerseysideN/ALong EatonLong Eaton, DerbyshireN/A London Mets Haringey, London Finsbury ParkManchester A’sWythenshawe, Greater ManchesterWythenshawe Park Sheffield Bruins Sheffield, South Yorkshire Thorpe Green Park
2026 league system UK baseball is not a professional sport, so the league structure changes every season. In 2026, the format will be the following: LevelNational Baseball LeagueDivision 19 teamsNorth5 teamsSouth4 teamsDivision 29 teamsEast4 teamsWest5 teamsDivision 325 teamsNorth7 teamsCentral5 teamsSouth8 teamsSouth West andWales (SWWBL)5 teamsDivision 432 teamsNorth6 teamsCentral4 teamsEast5 teamsLondon5 teamsSouth5 teamsSWWBL7 teamsDivision 526 teams -Central5 teamsEast4 teamsUpper Canal3 teamsSouth5 teamsSWWBLSevern5 teamsSWWBLWessex4 teamsDevelopment -Lower Canal3 teams -
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