| 2003–04 BBL season | |
| League: | British Basketball League |
| Sport: | Basketball |
| Playoffs: | Roll of Honour |
| Conf1: | BBL |
| Conf1 Champ: | Brighton Bears |
| Conf2: | Play Off's |
| Conf2 Champ: | Sheffield Sharks |
| Conf3: | BBL Cup |
| Conf3 Champ: | Sheffield Sharks |
| Conf4: | BBL Trophy |
| Conf4 Champ: | Chester Jets |
| Seasonslist: | List of British Basketball League seasons |
| Seasonslistnames: | British Basketball League |
| Prevseason Year: | 2002–03 |
| Nextseason Year: | 2004–05 |
The 2003–04 BBL season was the 17th campaign in the history of the British Basketball League.
| width=25% | Team | width=19% | City/Area | width=29% | Arena | width=12% | Capacity | width=15% | Last season |
|---|---|---|---|---|---|---|---|---|---|
| Birmingham Bullets | Birmingham | Birmingham Sports Centre | 1,000 | 9th | |||||
| Brighton Bears | Brighton | Brighton Centre & Burgess Hill Triangle | 3,600 1,800 | 2nd | |||||
| Chester Jets | Chester | Northgate Arena | 1,000 | 3rd | |||||
| Leicester Riders | Loughborough | Loughborough University | 1,200 | 11th | |||||
| London Towers | London | Crystal Palace National Sports Centre | 3,500 | 7th | |||||
| Milton Keynes Lions | Milton Keynes | Bletchley Centre | 800 | 8th | |||||
| Newcastle Eagles | Newcastle upon Tyne | Telewest Arena | 6,500 | 5th | |||||
| Scottish Rocks | Glasgow | Braehead Arena | 4,000 | 6th | |||||
| Sheffield Sharks | Sheffield | Hallam FM Arena & Ponds Forge | 8,500 1,600 | 1st | |||||
| Thames Valley Tigers | Bracknell | John Nike Sports Centre | 1,000 | 4th |
| Pos | Team | Pld | W | L | % | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Brighton Bears | 36 | 30 | 6 | 0.833 | 60 | |
| 2 | Sheffield Sharks | 36 | 26 | 10 | 0.722 | 52 | |
| 3 | London Towers | 36 | 23 | 13 | 0.638 | 46 | |
| 4 | Scottish Rocks | 36 | 23 | 13 | 0.638 | 46 | |
| 5 | Chester Jets | 36 | 21 | 15 | 0.583 | 42 | |
| 6 | Newcastle Eagles | 36 | 18 | 18 | 0.500 | 36 | |
| 7 | Thames Valley Tigers | 36 | 18 | 18 | 0.500 | 36 | |
| 8 | Milton Keynes Lions | 36 | 13 | 23 | 0.362 | 26 | |
| 9 | Leicester Riders | 36 | 5 | 31 | 0.138 | 10 | |
| 10 | Birmingham Bullets | 36 | 2 | 34 | 0.055 | 4 |
| = League winners | ||
| = Qualified for the play-offs |
| Pos | Team | Pld | W | L | % | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Plymouth Raiders | 22 | 20 | 2 | 0.909 | 40 | |
| 2 | Reading Rockets | 22 | 17 | 5 | 0.773 | 34 | |
| 3 | Teesside Mohawks | 22 | 16 | 6 | 0.727 | 32 | |
| 4 | Manchester Magic | 22 | 16 | 6 | 0.727 | 32 | |
| 5 | Worthing Thunder | 22 | 15 | 7 | 0.682 | 30 | |
| 6 | London United | 22 | 11 | 11 | 0.500 | 22 | |
| 7 | City of Sheffield Arrows | 22 | 10 | 12 | 0.455 | 20 | |
| 8 | Ware Rebels | 22 | 9 | 13 | 0.409 | 18 | |
| 9 | Sutton Pumas | 22 | 7 | 15 | 0.318 | 14 | |
| 10 | Solent Stars | 22 | 4 | 18 | 0.182 | 8 | |
| 11 | Kingston Wildcats | 22 | 4 | 18 | 0.182 | 8 | |
| 12 | Bath Romans | 22 | 3 | 19 | 0.136 | 6 |
| = League winners | ||
| = Qualified for the play-offs |
This season saw the first edition of the newly created Haribo Cup. Following the BBL's decision to withdraw from the National Cup due to import player regulations, the League's newest competition saw all 10 teams competing in a knock-out style tournament culminating in the Grand Final at the National Indoor Arena in Birmingham.
Due to the lack of teams competing in this season's Championship, the BBL Trophy featured all 10 BBL teams plus two invited teams from the English Basketball League (Plymouth Raiders and Teesside Mohawks). The First round saw all 12 teams divided into four regionalised groups with the top finishing team advancing to the Semi-finals.
Northern Group 1
| Team | Pts | Pld | W | L | Percent | |
|---|---|---|---|---|---|---|
| 1.Scottish Rocks | 8 | 4 | 4 | 0 | 1.000 | |
| 2.Newcastle Eagles | 4 | 4 | 2 | 2 | 0.500 | |
| 3.Teesside Mohawks | 0 | 4 | 0 | 4 | 0.000 |
Southern Group 1
| Team | Pts | Pld | W | L | Percent | |
|---|---|---|---|---|---|---|
| 1.London Towers | 6 | 4 | 3 | 1 | 0.750 | |
| 2.Milton Keynes Lions | 6 | 4 | 3 | 1 | 0.750 | |
| 3.Birmingham Bullets | 0 | 4 | 0 | 4 | 0.000 |
Northern Group 2
| Team | Pts | Pld | W | L | Percent | |
|---|---|---|---|---|---|---|
| 1.Chester Jets | 6 | 4 | 3 | 1 | 0.750 | |
| 2.Sheffield Sharks | 6 | 4 | 3 | 1 | 0.750 | |
| 3.Leicester Riders | 0 | 4 | 0 | 4 | 0.000 |
Southern Group 2
| Team | Pts | Pld | W | L | Percent | |
|---|---|---|---|---|---|---|
| 1.Brighton Bears | 8 | 4 | 4 | 0 | 1.000 | |
| 2.Thames Valley Tigers | 4 | 4 | 2 | 2 | 0.500 | |
| 3.Plymouth Raiders | 0 | 4 | 0 | 4 | 0.000 |
| Category | Player | Stat | |
|---|---|---|---|
| Points per game |  Mike Pegues (Leicester Riders) | 24.7 | |
| Rebounds per game | Shawn Jamison (Milton Keynes Lions) | 11.6 | |
| Assists per game |  Rob Paternostro (Birmingham Bullets) | 7.8 |