EVENT 302 Mixed 50m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Maja BALL | 9 | Grantham | |
| 3 | 2 | Martha WOOD | 9 | Grantham | |
| 4 | 3 | Jia CHEN-REES | 8 | Grantham | |
| 5 | 4 | Joyce KIM | 8 | Grantham | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Tabitha GODDARD | 8 | Grantham | |
| 2 | 6 | Lois MCDONNELL | 9 | Grantham | |
| 3 | 7 | Evie FELTON | 10 | Grantham | 1:11.34 |
| 4 | 8 | Hannah EXLEY | 11 | Grantham | 1:11.15 |
| 5 | 9 | Willem POWELL-VREESWIJ | 10 | Grantham | 1:10.70 |
| 6 | 10 | Emily BOWER | 10 | Grantham | 1:10.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Henry LEONARD | 9 | Grantham | 1:09.19 |
| 2 | 12 | George DOLAN | 9 | Grantham | 1:08.65 |
| 3 | 13 | Matilda HARPER | 9 | Grantham | 1:07.01 |
| 4 | 14 | Henry BOWERS | 9 | Grantham | 1:06.54 |
| 5 | 15 | Sophia WRIGHT | 9 | Grantham | 1:06.41 |
| 6 | 16 | Bethany MEAKIN | 11 | Grantham | 1:05.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Norahh MOE-AUNG | 11 | Grantham | 1:05.00 |
| 2 | 18 | Gracie PAYNE | 12 | Grantham | 1:05.00 |
| 3 | 19 | Ralph MILNE | 10 | Grantham | 1:05.00 |
| 4 | 20 | Louis THOMPSON | 10 | Grantham | 1:05.00 |
| 5 | 21 | Austin CHEN-REES | 12 | Grantham | 1:01.00 |
| 6 | 22 | Albert THORPE | 11 | Grantham | 1:00.88 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 23 | Tilly WASKETT-BOOTH | 9 | Grantham | 57.77 |
| 2 | 24 | Evangeline KINNEAR | 12 | Grantham | 57.31 |
| 3 | 25 | Esmé EVANS | 11 | Grantham | 56.99 |
| 4 | 26 | Oliver PYGOTT-HAMMOND | 9 | Grantham | 56.56 |
| 5 | 27 | Olivia CHARITY | 13 | Grantham | 55.80 |
| 6 | 28 | Francesca WESTON | 10 | Grantham | 55.79 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 29 | Georgia BELLETT | 10 | Grantham | 55.75 |
| 2 | 30 | George COOPER | 10 | Grantham | 55.00 |
| 3 | 31 | Lucia CORTON | 10 | Grantham | 55.00 |
| 4 | 32 | Poppy BRODIE | 13 | Grantham | 54.78 |
| 5 | 33 | Annabel HILLSON | 10 | Grantham | 54.35 |
| 6 | 34 | Caitlin IZOD | 12 | Grantham | 54.22 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 35 | Honey FLOWER | 11 | Grantham | 53.66 |
| 2 | 36 | William PENNOCK | 11 | Grantham | 51.86 |
| 3 | 37 | Daniel GODDARD | 10 | Grantham | 51.30 |
| 4 | 38 | Matilda MCDONNELL | 12 | Grantham | 51.26 |
| 5 | 39 | Evelyn NICHOLLS | 12 | Grantham | 50.51 |
| 6 | 40 | Emily CLAYTON | 11 | Grantham | 50.38 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 41 | Benjamin SHEARN | 11 | Grantham | 49.53 |
| 2 | 42 | Emmeline GLEAVE | 10 | Grantham | 49.52 |
| 3 | 43 | Florence HARPER | 12 | Grantham | 49.50 |
| 4 | 44 | Abigail TAYLOR | 11 | Grantham | 49.35 |
| 5 | 45 | Cyril BAO | 9 | Grantham | 48.79 |
| 6 | 46 | Benjamin GODDARD | 12 | Grantham | 48.52 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 47 | Madeline SURTEES | 13 | Grantham | 48.46 |
| 2 | 48 | Elisabeth KINNEAR | 15 | Grantham | 48.14 |
| 3 | 49 | Juliette KIM | 10 | Grantham | 48.09 |
| 4 | 50 | Elizabeth JONES | 15 | Grantham | 47.61 |
| 5 | 51 | Freddie HIRST | 11 | Grantham | 46.32 |
| 6 | 52 | Ava-Grace GREGORY | 13 | Grantham | 46.24 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 53 | Octavia SHEARN | 13 | Grantham | 46.14 |
| 2 | 54 | Juliette KING | 13 | Grantham | 46.06 |
| 3 | 55 | Thomas HILLSON | 12 | Grantham | 45.46 |
| 4 | 56 | George LEONARD | 13 | Grantham | 44.56 |
| 5 | 57 | Louis WRIGHT | 12 | Grantham | 44.33 |
| 6 | 58 | Isabelle CLAYTON | 13 | Grantham | 44.20 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 59 | Leo BARNETT | 13 | Grantham | 44.11 |
| 2 | 60 | Jimmin BAO | 12 | Grantham | 43.96 |
| 3 | 61 | Hannah DOBNEY | 16 | Grantham | 43.90 |
| 4 | 62 | Elliot GLEAVE | 12 | Grantham | 43.61 |
| 5 | 63 | Elena ALDENHOFF-KELLY | 17 | Grantham | 42.98 |
| 6 | 64 | Ella KHAMA | 11 | Grantham | 42.31 |
| Heat Number - 12 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 65 | Jessica - Rose DAVISON | 16 | Grantham | 42.21 |
| 2 | 66 | Thomas KINNEAR | 14 | Grantham | 42.16 |
| 3 | 67 | Lucy ABBOTT | 13 | Grantham | 42.06 |
| 4 | 68 | Arthur BREARLEY-NEWSOM | 14 | Grantham | 40.98 |
| 5 | 69 | Markas PARAPIJONAVICIU | 12 | Grantham | 40.89 |
| 6 | 70 | Grace HOWITT | 16 | Grantham | 40.35 |
| Heat Number - 13 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 71 | Darcey WOOD | 14 | Grantham | 40.05 |
| 2 | 72 | Lucy WILLATTS | 14 | Grantham | 39.51 |
| 3 | 73 | Henry DOLAN | 12 | Grantham | 39.36 |
| 4 | 74 | Ellena HOWITT | 14 | Grantham | 39.23 |
| 5 | 75 | Sophie WARD | 16 | Grantham | 38.65 |
| 6 | 76 | Mia PARAPIJONAVICIUTE | 16 | Grantham | 38.39 |
| Heat Number - 14 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 77 | Grace TURNER | 18 | Grantham | 38.31 |
| 2 | 78 | Amy TAYLOR | 14 | Grantham | 38.31 |
| 3 | 79 | Ben CARLYLE | 15 | Grantham | 37.48 |
| 4 | 80 | Isobel ALLSOP | 15 | Grantham | 37.24 |
| 5 | 81 | Annabelle JAY | 14 | Grantham | 37.11 |
| 6 | 82 | Chloe HOPKINSON | 20 | Grantham | 35.98 |
| Heat Number - 15 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 84 | Luke DAYBELL | 16 | Grantham | 35.51 |
| 2 | 86 | Zach HOPKINSON | 16 | Grantham | 32.05 |
| 3 | 88 | Benjamin ROBERTS | 16 | Grantham | 30.25 |
| 4 | 87 | Jack ZERAVICA | 17 | Grantham | 31.42 |
| 5 | 85 | Jacob FISH | 16 | Grantham | 32.75 |
| 6 | 83 | Isla GRAY | 15 | Grantham | 35.82 |