EVENT 103 Female 12 Yrs/Under 50m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Harriet HOLLOWAY | 11 | Deepings | |
| 4 | 2 | Norah GIBSON | 11 | Grantham | |
| 5 | 3 | Chloe BERNERS | 12 | Deepings | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Felicity MARSHALL | 12 | Deepings | |
| 2 | 5 | Polina KUDRIAVETS | 10 | Deepings | |
| 3 | 6 | Imola HARRIS | 9 | Grantham | |
| 4 | 7 | Charlotte DAVIES | 10 | Deepings | |
| 5 | 8 | Beatrix SHEPPARD | 9 | Grantham | |
| 6 | 9 | Evelyn CHARITY | 9 | Grantham | |
| 7 | 10 | Georgia HUNT | 10 | Grantham | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Elsie WENTWORTH | 11 | Lincoln Vulc | 1:02.75 |
| 2 | 12 | F FRASER-CATTANACH | 12 | Lincoln Vulc | 1:01.95 |
| 3 | 13 | Phoebe ABLITT | 9 | Co Lincoln P | 1:00.00 |
| 4 | 14 | Ada HUGHES | 10 | Co Lincoln P | 1:00.00 |
| 5 | 15 | Tabitha LAMBERT | 10 | Lincoln Vulc | 59.82 |
| 6 | 16 | Layla MERRICK | 11 | Co Lincoln P | 58.05 |
| 7 | 17 | Martha WILLIAMS | 9 | Lincoln Vulc | 57.35 |
| 8 | 18 | Tabitha GODDARD | 9 | Grantham | 56.83 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | Sienna GREEN | 11 | Co Lincoln P | 55.00 |
| 2 | 20 | Emilia BENNETT | 11 | Co Lincoln P | 54.59 |
| 3 | 21 | Maja BALL | 9 | Grantham | 54.00 |
| 4 | 22 | Freya GILLIATT | 9 | Co Lincoln P | 53.00 |
| 5 | 23 | Matilda HARPER | 10 | Grantham | 52.72 |
| 6 | 24 | Seren TWINLEY | 10 | Deepings | 52.52 |
| 7 | 25 | Florence MCCANN | 9 | Lincoln Vulc | 52.07 |
| 8 | 26 | Mya LAMBERT | 10 | Co Lincoln P | 51.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 27 | Matilda KOS | 11 | Co Lincoln P | 51.00 |
| 2 | 28 | Emelia BARTON | 9 | Lincoln Vulc | 50.00 |
| 3 | 29 | Cecily THOMPSON | 9 | Lincoln Vulc | 50.00 |
| 4 | 30 | Charlotte BERRY | 11 | Co Lincoln P | 49.00 |
| 5 | 31 | Ella CARDDOCK | 12 | Co Lincoln P | 49.00 |
| 6 | 32 | Bethany MEAKIN | 11 | Grantham | 46.57 |
| 7 | 33 | Lillian ROBSON | 11 | Lincoln Vulc | 45.75 |
| 8 | 34 | Halla ALY | 12 | Lincoln Vulc | 45.56 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 35 | Megan PERKIN | 11 | Lincoln Vulc | 45.55 |
| 2 | 36 | Emily CLAYTON | 12 | Grantham | 45.08 |
| 3 | 37 | Ginny PARNHAM | 12 | Lincoln Vulc | 44.84 |
| 4 | 38 | Isla GILLIATT | 11 | Co Lincoln P | 44.74 |
| 5 | 39 | Hallie ELLIS-HYMAN | 10 | Lincoln Vulc | 44.53 |
| 6 | 40 | Gracie PAYNE | 12 | Grantham | 43.81 |
| 7 | 41 | Martha WOOD | 9 | Grantham | 43.69 |
| 8 | 42 | Ada PAGE | 10 | Grantham | 43.46 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 43 | C TOH-GRUDZINSKI | 10 | Lincoln Vulc | 42.55 |
| 2 | 44 | Tilly WASKETT-BOOTH | 10 | Grantham | 42.35 |
| 3 | 45 | Georgia BELLETT | 11 | Grantham | 41.96 |
| 4 | 46 | Jessica REEVES | 12 | Lincoln Vulc | 41.91 |
| 5 | 48 | Hollie FORSYTH | 10 | Lincoln Vulc | 41.76 |
| 6 | 49 | Martha SMITH | 10 | Co Lincoln P | 41.49 |
| 7 | 50 | Evangeline KINNEAR | 12 | Grantham | 41.45 |
| 8 | 51 | Evelyn NICHOLLS | 12 | Grantham | 41.45 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 52 | Abigail TAYLOR | 12 | Grantham | 41.26 |
| 2 | 54 | Francesca WESTON | 11 | Grantham | 40.87 |
| 3 | 55 | Evelyn LITTLE | 11 | Lincoln Vulc | 40.87 |
| 4 | 56 | Yu Tsing (Trixie) CHEU | 12 | Grantham | 40.54 |
| 5 | 57 | Mia WILLIAMS | 12 | Lincoln Vulc | 40.23 |
| 6 | 58 | Annabel HILLSON | 11 | Grantham | 40.07 |
| 7 | 59 | Tilly ROTHWELL | 11 | Co Lincoln P | 39.96 |
| 8 | 60 | Brooke LANSELL | 11 | Lincoln Vulc | 39.87 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 61 | Chloe GOACHER | 12 | Grantham | 39.83 |
| 2 | 62 | Jasmine HOLDER | 11 | Gainsborough | 39.83 |
| 3 | 63 | Esme EVANS | 12 | Grantham | 39.75 |
| 4 | 64 | Amy STEPHENSON | 11 | Co Lincoln P | 39.64 |
| 5 | 65 | Ava MORGAN | 12 | Co Lincoln P | 39.40 |
| 6 | 66 | Poppy-Rose WILSON | 11 | Deepings | 38.63 |
| 7 | 67 | Seren EVANS | 11 | Co Lincoln P | 38.50 |
| 8 | 68 | Rebecca BATISTA | 10 | Co Lincoln P | 38.29 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 69 | Emmeline GLEAVE | 10 | Grantham | 38.20 |
| 2 | 70 | Jasmine CHEETHAM | 12 | Lincoln Vulc | 38.17 |
| 3 | 71 | A HATCHER BRENNAN | 11 | Deepings | 38.14 |
| 4 | 72 | Ophelia GOODALE | 11 | Deepings | 37.86 |
| 5 | 73 | Eleanor DE ROSE | 12 | Deepings | 37.81 |
| 6 | 74 | Lucy MARTIN | 10 | Lincoln Vulc | 37.72 |
| 7 | 75 | Amelie HUNT | 12 | Deepings | 37.55 |
| 8 | 76 | Gabriella HAYES | 11 | NottmLeander | 37.49 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 77 | Honey FLOWER | 11 | Grantham | 37.03 |
| 2 | 78 | Amaya MONTEALEGRE | 12 | Lincoln Vulc | 36.68 |
| 3 | 81 | Victoria MCKAY | 12 | Gainsborough | 35.87 |
| 4 | 82 | Lydia EVANS | 12 | Co Lincoln P | 35.86 |
| 5 | 83 | Abigail WORTHINGTON | 12 | Lincoln Vulc | 35.84 |
| 6 | 84 | Alice SOWDEN | 11 | Gainsborough | 35.71 |
| 7 | 85 | Chloe APPLEWHITE | 10 | Gainsborough | 35.17 |
| 8 | 86 | Hollie-Ann CROOK | 11 | Grantham | 34.91 |
| Heat Number - 12 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 87 | Caitlynn EDMEADES | 12 | Deepings | 34.74 |
| 2 | 88 | Niamh KERRIGAN | 12 | Co Lincoln P | 34.59 |
| 3 | 89 | Aoife HICKEY | 12 | Deepings | 34.53 |
| 4 | 90 | Isla ROBINSON | 12 | Co Lincoln P | 34.46 |
| 5 | 91 | Arin ELVIDGE | 12 | Lincoln Vulc | 34.44 |
| 6 | 92 | Eva MADDISON | 11 | Co Lincoln P | 34.29 |
| 7 | 93 | Colette GRANTHAM | 12 | Lincoln Vulc | 34.26 |
| 8 | 94 | Katie BEASTALL | 12 | Co Lincoln P | 33.70 |
| Heat Number - 13 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 96 | Esme APPLEWHITE | 12 | Gainsborough | 33.57 |
| 2 | 98 | Freya HUGHES | 12 | Co Lincoln P | 33.15 |
| 3 | 100 | Margot MARKS | 12 | Lincoln Vulc | 32.05 |
| 4 | 102 | Miley RICHARDSON | 12 | Co Lincoln P | 31.10 |
| 5 | 101 | Isobel DELDERFIELD | 12 | Co Lincoln P | 32.00 |
| 6 | 99 | Ruby TALKES | 10 | Lincoln Vulc | 32.69 |
| 7 | 97 | Ella KHAMA | 12 | Grantham | 33.19 |
| 8 | 95 | Caitlin BOWLES | 12 | Gainsborough | 33.70 |