EVENT 203 Female 09/Over 50m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Erin MELLER | 10 | Louth | |
| 4 | 3 | Suzuki CARTER | 9 | Skegness | 1:08.28 |
| 5 | 2 | Natasha SHARPE | 10 | Melton M'bry | 1:10.81 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Evangeline KINNEAR | 10 | Grantham | 1:00.70 |
| 2 | 7 | Florence WEBB | 9 | Louth | 1:00.00 |
| 3 | 9 | Ariana MERCER | 9 | Melton M'bry | 58.84 |
| 4 | 11 | Annabel HILLSON | 9 | Grantham | 56.54 |
| 5 | 10 | Lenorah MISIUDA | 10 | Melton M'bry | 58.70 |
| 6 | 8 | Wendy VARCOE | 10 | Louth | 59.00 |
| 7 | 6 | Martha MARSDEN | 11 | Melton M'bry | 1:00.12 |
| 8 | 4 | Lyla ELLIS | 9 | Louth | 1:05.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Honey FLOWER | 9 | Grantham | 55.13 |
| 2 | 15 | Alyssia DONNISON | 13 | Louth | 55.00 |
| 3 | 17 | Emily CLAYTON | 10 | Grantham | 54.33 |
| 4 | 19 | Elspeth MASON-SMITH | 10 | Louth | 53.02 |
| 5 | 18 | Amelie JOHNSTONE | 10 | Newark | 54.31 |
| 6 | 16 | Abigail TAYLOR | 10 | Grantham | 54.48 |
| 7 | 14 | Aoife DUNCAN | 11 | Louth | 55.00 |
| 8 | 12 | Holly GLASSFORD | 10 | Melton M'bry | 56.15 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Emmie DENIGAN | 10 | Melton M'bry | 51.66 |
| 2 | 23 | Zuzanna ZANIEWSKA | 16 | Boston | 51.00 |
| 3 | 25 | Boglarka ELEK | 10 | Melton M'bry | 50.53 |
| 4 | 27 | Niha YEWLETT | 9 | Grantham | 50.00 |
| 5 | 26 | Hollie-Anne CROOK | 10 | Grantham | 50.06 |
| 6 | 24 | Matilda MCDONNELL | 11 | Grantham | 50.62 |
| 7 | 22 | Lucy PITCHER | 12 | Newark | 51.09 |
| 8 | 20 | Kara HARRITY | 9 | Melton M'bry | 51.94 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 29 | Trixie CHEUNG | 10 | Grantham | 50.00 |
| 2 | 32 | Florence HARPER | 11 | Grantham | 48.74 |
| 3 | 34 | Bella Rose ASKEW | 11 | Skegness | 48.33 |
| 4 | 36 | Izabella ZANIEWSKA | 11 | Boston | 47.59 |
| 5 | 35 | Lilly THROWER | 10 | Louth | 47.96 |
| 6 | 33 | Ava-Grace GREGORY | 12 | Grantham | 48.54 |
| 7 | 31 | Helena HAMILTON | 12 | Grantham | 49.25 |
| 8 | 28 | Hana YEWLETT | 9 | Grantham | 50.00 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 38 | Willow HIBBITT | 9 | Melton M'bry | 47.25 |
| 2 | 40 | Ella KHAMA | 10 | Grantham | 46.40 |
| 3 | 42 | Amelie MORRIS | 12 | Boston | 45.84 |
| 4 | 44 | Daisy-Grace WILDISH | 9 | Retford | 45.40 |
| 5 | 43 | Eden DYSON | 12 | Grantham | 45.46 |
| 6 | 41 | Isla-Rose WILDISH | 10 | Retford | 46.36 |
| 7 | 39 | Daisy CANTILLON | 11 | Grantham | 47.00 |
| 8 | 37 | Eden DAVIES | 9 | March | 47.30 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 46 | Raemona PAYNE | 10 | Melton M'bry | 44.61 |
| 2 | 48 | Evie BOURNE | 11 | Melton M'bry | 43.91 |
| 3 | 50 | Thea WHOTTON | 11 | Louth | 43.79 |
| 4 | 52 | Elisabeth KINNEAR | 14 | Grantham | 43.11 |
| 5 | 51 | Isabelle CLAYTON | 11 | Grantham | 43.79 |
| 6 | 49 | Lucy BARRATT | 11 | Gainsborough | 43.90 |
| 7 | 47 | Poppy CHAPMAN | 12 | Louth | 44.28 |
| 8 | 45 | Florence SHEPHERD | 12 | Gainsborough | 44.91 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 54 | Octavia SHEARN | 11 | Grantham | 42.67 |
| 2 | 56 | Lillie DRENNAN | 14 | Melton M'bry | 42.24 |
| 3 | 58 | Harriet FEAVIOUR | 9 | March | 41.60 |
| 4 | 60 | Charlotte GOSLING | 14 | Newark | 41.02 |
| 5 | 59 | Lizzy LERESCHE HANDS | 12 | Grantham | 41.49 |
| 6 | 57 | Katie DAGG | 13 | March | 42.19 |
| 7 | 55 | Abbie MACKIE | 14 | March | 42.40 |
| 8 | 53 | Ana BASCARAU | 11 | Boston | 43.03 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 62 | Paris CABORN | 11 | Louth | 40.71 |
| 2 | 64 | Poppy HATHWAY | 12 | Grantham | 40.37 |
| 3 | 66 | Sienna MERCER | 12 | Melton M'bry | 40.03 |
| 4 | 68 | Ella HE | 11 | Gainsborough | 39.80 |
| 5 | 67 | Emily SMITH | 14 | Boston | 39.95 |
| 6 | 65 | Mia PARAPIJONAVICIUTE | 15 | Grantham | 40.07 |
| 7 | 63 | Sophie SHARPE | 13 | Melton M'bry | 40.60 |
| 8 | 61 | Mia JONES | 11 | March | 40.89 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 70 | Erin NORTON | 13 | Boston | 39.18 |
| 2 | 72 | Annie WEBSTER | 12 | Grantham | 38.74 |
| 3 | 74 | Amelia HATHWAY | 15 | Grantham | 38.53 |
| 4 | 76 | Lexie SHEWAN | 13 | Grantham | 38.38 |
| 5 | 75 | Yasmine WAITE | 14 | March | 38.47 |
| 6 | 73 | Niamh O'DONOGHUE | 12 | March | 38.62 |
| 7 | 71 | Alicia-Rose OSWIN | 16 | Boston | 38.94 |
| 8 | 69 | Kitty PAYNE | 13 | March | 39.62 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 79 | Grace HOWITT | 15 | Grantham | 38.14 |
| 2 | 81 | Vilte ROPEIKAITE | 15 | Boston | 37.66 |
| 3 | 84 | Sophie WARD | 14 | Grantham | 36.00 |
| 4 | 86 | Amy TAYLOR | 13 | Grantham | 35.62 |
| 5 | 85 | Megan RUTT | 14 | Boston | 35.82 |
| 6 | 82 | Milen MERRITT | 12 | Melton M'bry | 37.03 |
| 7 | 80 | Alexa WRIGHT | 16 | Grantham | 37.83 |
| 8 | 78 | Jane BEECH | 14 | Melton M'bry | 38.17 |
| Heat Number - 12 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 88 | Ivy BROWN | 12 | Melton M'bry | 34.75 |
| 2 | 90 | Isobel ALLSOP | 14 | Grantham | 34.45 |
| 3 | 92 | Lucy WILLATTS | 12 | Grantham | 34.32 |
| 4 | 94 | Evie TURNER | 18 | Grantham | 32.00 |
| 5 | 93 | Isabelle MCCORKELL | 16 | Gainsborough | 33.50 |
| 6 | 91 | Jessica - Rose DAVISON | 14 | Grantham | 34.36 |
| 7 | 89 | Annabelle JAY | 12 | Grantham | 34.62 |
| 8 | 87 | Ellena HOWITT | 13 | Grantham | 35.56 |