1999 British motorcycle Grand Prix
The 1999 British motorcycle Grand Prix was the eighth round of the 1999 Grand Prix motorcycle racing season. It took place on 4 July 1999 at Donington Park.250 cc classification
125 cc classification
Championship standings after the race (500cc)
Below are the standings for the top five riders and constructors after round eight has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Honda | 186 |
| 2 | Yamaha | 120 |
| 3 | Suzuki | 102 |
| 4 |  Aprilia | 66 |
| 5 |  MuZ Weber | 34 |
- Note: Only the top five positions are included for both sets of standings.
Àlex Crivillé
Kenny Roberts Jr.