| 2021-05-21 10:30:38Friday, May 21, 2021 | Belle Vue Colts v Newcastle Gems | 10:30:38Postponed | P - P | National Development League | National Speedway Stadium |
| 2021-05-22 20:00:08Saturday, May 22, 2021 | Berwick Bullets v Belle Vue Colts | 20:00:088:00 pm | 52 - 38 | National Development League | Shielfield Park |
| 2021-05-28 19:30:38Friday, May 28, 2021 | Belle Vue Colts v Berwick Bullets | 19:30:387:30 pm | 51 - 38 | National Development League | National Speedway Stadium |
| 2021-06-19 14:30:34Saturday, June 19, 2021 | Armadale Devils v Belle Vue Colts | 14:30:342:30 pm | 48 - 42 | National Development League | Armadale Stadium |
| 2021-07-02 19:30:38Friday, July 2, 2021 | Belle Vue Colts v Kent Royals | 19:30:387:30 pm | 39 - 50 | National Development League | National Speedway Stadium |
| 2021-07-23 19:30:38Friday, July 23, 2021 | Belle Vue Colts v Eastbourne Seagulls | 19:30:387:30 pm | 46 - 43 | National Development League | National Speedway Stadium |
| 2021-07-29 19:30:38Thursday, July 29, 2021 | Belle Vue Colts v Leicester Lion Cubs | 19:30:387:30 pm | 47 - 42 | National Development League | National Speedway Stadium |
| 2021-08-08 15:00:50Sunday, August 8, 2021 | Mildenhall Fen Tigers v Belle Vue Colts | 15:00:503:00 pm | 46 - 44 | National Development League | Mildenhall Stadium |
| 2021-08-20 19:30:38Friday, August 20, 2021 | Belle Vue Colts v Armadale Devils | 19:30:387:30 pm | 51 - 39 | National Development League | National Speedway Stadium |
| 2021-09-03 19:30:38Friday, September 3, 2021 | Belle Vue Colts v Mildenhall Fen Tigers | 19:30:387:30 pm | 39 - 51 | National Development League | National Speedway Stadium |
| 2021-10-23 19:00:47Saturday, October 23, 2021 | Leicester Lion Cubs v Belle Vue Colts | 19:00:477:00 pm | 54 - 36 | National Development League | Paul Chapman & Sons Arena |
| 2021-10-26 18:30:15Tuesday, October 26, 2021 | Kent Royals v Belle Vue Colts | 18:30:156:30 pm | 44 - 46 | National Development League | Central Park Stadium |
