EVENT 107 Mixed 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Judith CLARKE | 47 | Co Lincoln P | 4:30.00 |
| 3 | 3 | Leo FRANCZAK | 10 | Co Lincoln P | 4:30.00 |
| 4 | 2 | Jack ROWSELL | 11 | Co Lincoln P | 4:30.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Katie BEASTALL | 12 | Co Lincoln P | 3:38.84 |
| 2 | 7 | Emily PENNELL | 15 | Co Lincoln P | 3:30.00 |
| 3 | 9 | Niamh KERRIGAN | 12 | Co Lincoln P | 3:06.19 |
| 4 | 8 | Charlotte WELGEMOED | 14 | Co Lincoln P | 3:09.01 |
| 5 | 6 | Eva ENRIGHT | 13 | Co Lincoln P | 3:30.00 |
| 6 | 4 | Charlie YARNELL-STIRLA | 13 | Co Lincoln P | 3:50.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Connie MILLNS | 14 | Co Lincoln P | 3:02.94 |
| 2 | 13 | Hoby CARR | 14 | Co Lincoln P | 2:57.08 |
| 3 | 16 | Lilli-Rose CARR | 16 | Co Lincoln P | 2:24.29 |
| 4 | 14 | Harry BEASTALL | 14 | Co Lincoln P | 2:52.70 |
| 5 | 12 | Alice McMaster | 14 | Co Lincoln P | 3:00.54 |
| 6 | 10 | Harry MELDRUM | 14 | Co Lincoln P | 3:05.16 |