EVENT 401 Men MC 200m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 2 | 2 | Dan PALMER | 13 | Co Lincoln P | 2:59.03 |
| 3 | 4 | Oscar DURANT | 11 | Grantham | 2:47.20 |
| 4 | 6 | Henry SEAGROATT | 11 | Louth | 2:42.13 |
| 5 | 5 | Robbie DUFF | 11 | Lincoln Vulc | 2:45.81 |
| 6 | 3 | Oliver WILKINSON | 12 | Lincoln Vulc | 2:52.98 |
| 7 | 1 | Luca HALLAM | 12 | Grantham | 3:04.04 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 8 | Francesco MONACO | 12 | South Lincs | 2:39.10 |
| 2 | 10 | Charlie WARD | 10 | South Lincs | 2:33.55 |
| 3 | 12 | James CASH | 10 | Deepings | 2:30.96 |
| 4 | 14 | Daniel HEPPLESTONE | 10 | Lincoln Vulc | 2:28.10 |
| 5 | 13 | James THOMAS | 10 | Gainsborough | 2:30.20 |
| 6 | 11 | Jacob HEGG | 10 | Lincoln Vulc | 2:32.89 |
| 7 | 9 | Riley HAMER | 10 | Co Lincoln P | 2:34.49 |
| 8 | 7 | James HUCKLE | 11 | Lincoln Vulc | 2:40.19 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 16 | Layton ANNISON-SNOWDEN | 09 | Louth | 2:25.20 |
| 2 | 18 | Oliver SHEPHERD | 09 | Deepings | 2:24.63 |
| 3 | 20 | Luke DAYBELL | 09 | Grantham | 2:23.79 |
| 4 | 22 | Oliver JONES | 09 | Lincoln Vulc | 2:20.44 |
| 5 | 21 | Frank LAMB | 09 | South Lincs | 2:23.49 |
| 6 | 19 | Archie FRENCH | 09 | Lincoln Vulc | 2:23.91 |
| 7 | 17 | Matthew TOMPKINSON | 09 | Louth | 2:25.16 |
| 8 | 15 | Charlie BISBY | 11 | South Lincs | 2:27.56 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 24 | William TAYLOR | 08 | Louth | 2:19.67 |
| 2 | 26 | Morgan FARRAR | 09 | Co Lincoln P | 2:17.92 |
| 3 | 28 | Kieran NG | 10 | South Lincs | 2:16.07 |
| 4 | 30 | Evan NOORPURI | 07 | Lincoln Vulc | 2:15.44 |
| 5 | 29 | Leon BAILEY | 06 | Louth | 2:15.69 |
| 6 | 27 | Jacob SOWDEN | 06 | Lincoln Vulc | 2:16.82 |
| 7 | 25 | Matteo MONACO | 09 | South Lincs | 2:19.14 |
| 8 | 23 | Zach HOPKINSON | 09 | Grantham | 2:20.09 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 32 | Jacob FISH | 09 | Grantham | 2:14.29 |
| 2 | 34 | Jake ADAMS | 07 | Louth | 2:12.35 |
| 3 | 36 | Jensen HYLTON | 08 | Co Lincoln P | 2:11.70 |
| 4 | 38 | Finnley DANBY | 06 | Boston | 2:11.34 |
| 5 | 37 | Ryan NORTON | 07 | Boston | 2:11.37 |
| 6 | 35 | Joshua CLARKE | 08 | Grantham | 2:11.86 |
| 7 | 33 | Thomas HEPPLESTONE | 06 | Co Lincoln P | 2:13.96 |
| 8 | 31 | Jacob BRIERS | 08 | Deepings | 2:14.50 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 40 | Ewan COX | 08 | Co Lincoln P | 2:09.69 |
| 2 | 42 | James DOBNEY | 04 | Grantham | 2:08.20 |
| 3 | 44 | George BERWICK | 03 | Grantham | 2:07.00 |
| 4 | 46 | Oscar GOLDSMITH | 08 | South Lincs | 2:05.26 |
| 5 | 45 | Oliver SORRELL | 07 | South Lincs | 2:06.27 |
| 6 | 43 | Henry CRUST | 05 | Co Lincoln P | 2:07.12 |
| 7 | 41 | Ben LORD | 05 | Co Lincoln P | 2:08.57 |
| 8 | 39 | Christian O'MALLEY | 06 | Lincoln Vulc | 2:09.85 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 48 | Alfie BISBY | 07 | South Lincs | 2:02.80 |
| 2 | 50 | Joseph PARNELL | 07 | Co Lincoln P | 2:02.19 |
| 3 | 52 | Alex SADLER | 07 | South Lincs | 2:01.27 |
| 4 | 54 | Rico BRINGEMAN | 05 | South Lincs | 1:57.20 |
| 5 | 53 | Thomas BRUCE | 06 | South Lincs | 1:59.59 |
| 6 | 51 | Charlie MILLER | 05 | Skegness | 2:01.40 |
| 7 | 49 | Ethan RICHES | 03 | Co Lincoln P | 2:02.70 |
| 8 | 47 | Owen HATHWAY | 06 | Grantham | 2:04.03 |