1999–2000 British Basketball League season
The 1999–2000 BBL season, was known as the Dairylea Dunkers Championship for sponsorship reasons, the regular season commenced on September 15, 1999, and ended on April 8, 2000, with a total of 13 teams competing. For the first time in the league’s history, the 13 teams were split into two geographically divided Conferences, seven in the North and six in the South, with northern teams playing 36 games and southern teams playing 34 games each. The season was dominated by the success of Manchester Giants, conquering the Northern Conference and Championship Play-offs, whilst London Towers were victorious in the Southern Conference and the uni-ball Trophy. Sheffield Sharks were also successful in defending their Sainsbury's Classic Cola National Cup.
London Towers featured in European competition, participating in the Saporta Cup, though with a 3-7 record they finished at the bottom of Group G and thus failed to progress beyond the Group stage. Cross-town rivals Greater London Leopards also made a brief appearance in the Korać Cup but following a 155-189 aggregate defeat to ÍRB Reykjanesbær in the Preliminary round, their first foray into Europe was merely a cameo.
The Southern All-Stars beat their Northern rivals in the eleventh annual All-Star Game with a 177-180 victory, the closest result in the League's history. That was the 7th overall win of the South against the North who won 5 games since the All-Star Game's inception in 1989.
Dairylea Dunkers Championship (Tier 1)
Final standings
Northern Conference
| Pos | Team | Pld | W | L | % | Pts |
| 1 | Manchester Giants | 36 | 31 | 5 | 0.861 | 62 |
| 2 | Sheffield Sharks | 36 | 29 | 7 | 0.805 | 58 |
| 3 | Edinburgh Rocks | 36 | 19 | 17 | 0.527 | 38 |
| 4 | Chester Jets | 36 | 17 | 19 | 0.472 | 34 |
| 5 | Derby Storm | 36 | 17 | 19 | 0.472 | 34 |
| 6 | Newcastle Eagles | 36 | 10 | 26 | 0.277 | 20 |
| 7 | Leicester Riders | 36 | 10 | 26 | 0.277 | 20 |
Southern Conference
| Pos | Team | Pld | W | L | % | Pts |
| 1 | London Towers | 34 | 23 | 11 | 0.676 | 46 |
| 2 | Thames Valley Tigers | 34 | 18 | 16 | 0.529 | 36 |
| 3 | Birmingham Bullets | 34 | 17 | 17 | 0.500 | 34 |
| 4 | Milton Keynes Lions | 34 | 15 | 19 | 0.441 | 30 |
| 5 | Greater London Leopards | 34 | 11 | 23 | 0.323 | 22 |
| 6 | Brighton Bears | 34 | 11 | 23 | 0.323 | 22 |
National League Division 1 (Tier 2)
Final standings
| Pos | Team | Pld | W | L | % | Pts |
| 1 | Teesside Mohawks | 24 | 22 | 2 | 0.917 | 44 |
| 2 | Worthing Thunder Rebels | 24 | 21 | 3 | 0.875 | 42 |
| 3 | Solent Stars | 24 | 18 | 6 | 0.750 | 36 |
| 4 | Plymouth Raiders | 24 | 16 | 8 | 0.667 | 32 |
| 5 | Sutton Pumas | 24 | 12 | 12 | 0.500 | 24 |
| 6 | Islington White Heat | 24 | 12 | 12 | 0.500 | 24 |
| 7 | Coventry Crusaders | 24 | 11 | 13 | 0.458 | 22 |
| 8 | Taunton Tigers | 24 | 9 | 15 | 0.375 | 18 |
| 9 | Birmingham Bullets II | 24 | 8 | 16 | 0.333 | 16 |
| 10 | Westminster Warriors | 24 | 7 | 17 | 0.292 | 14 |
| 11 | Cardiff Clippers | 24 | 7 | 17 | 0.292 | 14 |
| 12 | Oxford Devils | 24 | 7 | 17 | 0.292 | 14 |
| 13 | Mid-Sussex Magic | 24 | 6 | 18 | 0.250 | 12 |
Playoffs
Quarter-finalsSemi-finals
'''Final'''
National League Division 2 (Tier 3)
Final standings
| Pos | Team | Pld | W | L | % | Pts |
| 1 | City of Manchester Attitude | 24 | 20 | 4 | 0.833 | 40 |
| 2 | Liverpool Atac | 24 | 18 | 6 | 0.750 | 36 |
| 3 | Kingston Wildcats | 24 | 17 | 7 | 0.708 | 34 |
| 4 | Brixton TopCats | 24 | 17 | 7 | 0.708 | 34 |
| 5 | Reading Rockets | 24 | 17 | 7 | 0.708 | 34 |
| 6 | North London Lords | 24 | 16 | 8 | 0.667 | 32 |
| 7 | Hull Icebergs | 24 | 11 | 13 | 0.458 | 22 |
| 8 | Northampton 89ers | 24 | 11 | 13 | 0.458 | 22 |
| 9 | Flintshire Flyers | 24 | 10 | 14 | 0.417 | 20 |
| 10 | Portsmouth Pirates | 24 | 7 | 17 | 0.292 | 14 |
| 11 | Wandsworth Hurricanes | 24 | 5 | 19 | 0.208 | 10 |
| 12 | Bournemouth Blitz | 24 | 4 | 20 | 0.167 | 8 |
| 13 | Swindon Sonics | 24 | 3 | 21 | 0.125 | 6 |
National League Division 3 (Tier 4)
Final standings
| Pos | Team | Pld | W | L | % | Pts |
| 1 | Doncaster Eagles | 24 | 23 | 1 | 0.958 | 46 |
| 2 | Mansfield Express | 24 | 20 | 4 | 0.833 | 40 |
| 3 | Ealing Tornadoes | 24 | 19 | 5 | 0.793 | 38 |
| 4 | Ware Fire | 24 | 16 | 8 | 0.667 | 32 |
| 5 | University of Birmingham | 24 | 15 | 9 | 0.625 | 30 |
| 6 | Bristol Bombers | 24 | 11 | 13 | 0.458 | 22 |
| 7 | NW London Wolverines | 24 | 9 | 15 | 0.375 | 18 |
| 8 | Barking & Dag. Erkenwald | 24 | 9 | 15 | 0.375 | 18 |
| 9 | Thames Valley Tigers II | 24 | 9 | 15 | 0.375 | 18 |
| 10 | Hanley Hornets | 24 | 7 | 17 | 0.293 | 14 |
| 11 | Brighton Cougars | 24 | 7 | 17 | 0.293 | 14 |
| 12 | Croydon Pumas | 24 | 6 | 18 | 0.250 | 12 |
| 13 | Derbyshire Arrows | 24 | 5 | 19 | 0.208 | 10 |
Play Off Final - Mansfield v Doncaster 84-76, 75-75
uni-ball Trophy
Group stage
Group A
| Team | Pts | Pld | W | L | Percent |
| 1.Greater London Leopards | 10 | 6 | 5 | 1 | 0.833 |
| 2.Derby Storm | 6 | 6 | 3 | 3 | 0.500 |
| 3.Birmingham Bullets | 6 | 6 | 3 | 3 | 0.500 |
| 4.Solent Stars | 2 | 6 | 1 | 5 | 0.166 |
- Derby qualified ahead of Birmingham on head-to-head results.
Group B
| Team | Pts | Pld | W | L | Percent |
| 1.London Towers | 12 | 6 | 6 | 0 | 1.000 |
| 2.Thames Valley Tigers | 8 | 6 | 4 | 2 | 0.666 |
| 3.Edinburgh Rocks | 4 | 6 | 2 | 4 | 0.333 |
| 4.Leicester Riders | 0 | 6 | 0 | 6 | 0.000 |
Group C
| Team | Pts | Pld | W | L | Percent |
| 1.Manchester Giants | 12 | 6 | 6 | 0 | 1.000 |
| 2.Newcastle Eagles | 8 | 6 | 4 | 2 | 0.666 |
| 3.Milton Keynes Lions | 4 | 6 | 2 | 4 | 0.333 |
| 4.Sutton Pumas | 0 | 6 | 0 | 6 | 0.000 |
Group D
| Team | Pts | Pld | W | L | Percent |
| 1.Sheffield Sharks | 12 | 6 | 6 | 0 | 1.000 |
| 2.Chester Jets | 6 | 6 | 3 | 3 | 0.500 |
| 3.Brighton Bears | 6 | 6 | 3 | 4 | 0.500 |
| 4.Plymouth Raiders | 0 | 6 | 0 | 6 | 0.000 |
- Chester qualified ahead of Brighton on head-to-head results.
Statistics leaders
| Category | Player | Stat |
| Points per game |  Seasonal awardsMost Valuable Player: Tony Dorsey Domestic Player of the Year: Steve Bucknall Import Player of the Year: Tony Dorsey Defensive Player of the Year: Roy Hairston Most Improved Player of the Year: Ian Whyte Coach of the Year: Nick Nurse All-Star First Team:
|