| | Heat Number - 1 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 3 | 1 | Lucie SCHMIDT | 10 | Co Cambridge | 1:59.00 |
| 4 | 2 | Millie EMMANS | 8 | Co Cambridge | 1:39.99 |
| 5 | 3 | Lara RUDIN | 9 | Co Cambridge | 1:39.99 |
| | Heat Number - 2 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 4 | Lauren CRAWFORD | 8 | Co Cambridge | 1:12.67 |
| 2 | 5 | Becky GARNER | 10 | Co Cambridge | 1:09.86 |
| 3 | 6 | Lili RONEY | 11 | Co Cambridge | 1:00.00 |
| 4 | 7 | Rebecca BURTON | 9 | Co Cambridge | 59.99 |
| 5 | 8 | Claire SHAWCROSS | 9 | Co Cambridge | 55.00 |
| 6 | 9 | Florence JONES | 10 | Co Cambridge | 54.83 |
| 7 | 10 | Fiorella NIGHTINGALE | 11 | Co Cambridge | 53.67 |
| 8 | 11 | Emily WINDSOR | 12 | Co Cambridge | 53.20 |
| | Heat Number - 3 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 12 | Ginny ROSE | 10 | Co Cambridge | 52.22 |
| 2 | 13 | Louise SCOTT | 12 | Co Cambridge | 52.07 |
| 3 | 14 | Joely SOCKETT | 11 | Co Cambridge | 51.85 |
| 4 | 15 | Zoe HILL | 10 | Co Cambridge | 51.72 |
| 5 | 16 | Amy DRYSDALE | 10 | Co Cambridge | 50.26 |
| 6 | 17 | Laura WEISE | 16 | Co Cambridge | 45.95 |
| 7 | 18 | Ryanne BAILEY | 10 | Co Cambridge | 45.68 |
| 8 | 19 | Kate HILL | 12 | Co Cambridge | 45.39 |
| | Heat Number - 4 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 20 | Isla DAVIDSON | 14 | Co Cambridge | 45.00 |
| 2 | 21 | Samantha DE LA-ROCQUE | 12 | Co Cambridge | 44.51 |
| 3 | 22 | Hannah SABEY | 11 | Co Cambridge | 44.30 |
| 4 | 23 | Annie LITTLE | 11 | Co Cambridge | 44.19 |
| 5 | 24 | Sophie LANKFORD | 12 | Co Cambridge | 44.07 |
| 6 | 25 | Kate ROLLINGS | 12 | Co Cambridge | 43.55 |
| 7 | 26 | Katie-jane ISBISTER | 12 | Co Cambridge | 42.89 |
| 8 | 27 | Nicola JEFFERIES | 10 | Co Cambridge | 42.86 |
| | Heat Number - 5 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 28 | Hannah JONES | 12 | Co Cambridge | 42.42 |
| 2 | 29 | Georgette SEARLE | 15 | Co Cambridge | 42.21 |
| 3 | 30 | Emma STRUTHERS | 13 | Co Cambridge | 41.05 |
| 4 | 31 | Sam AUKER | 12 | Co Cambridge | 40.91 |
| 5 | 32 | Georgia CRAWFORD | 11 | Co Cambridge | 40.77 |
| 6 | 33 | Alexandra HOLT | 11 | Co Cambridge | 40.20 |
| 7 | 34 | Holly REES | 14 | Co Cambridge | 38.85 |
| 8 | 35 | Sophie LANHAM | 14 | Co Cambridge | 38.69 |
| | Heat Number - 6 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 37 | Alice SHARPE | 13 | Co Cambridge | 37.72 |
| 2 | 39 | Victoria WAY | 15 | Co Cambridge | 36.75 |
| 3 | 41 | Millie ROSE | 12 | Co Cambridge | 36.25 |
| 4 | 43 | Ellie WINTER | 12 | Co Cambridge | 36.02 |
| 5 | 42 | Amy DIVE | 15 | Co Cambridge | 36.16 |
| 6 | 40 | Fay WESTWOOD | 15 | Co Cambridge | 36.74 |
| 7 | 38 | Sarah BRENNAN | 14 | Co Cambridge | 37.50 |
| 8 | 36 | Mara JOHNSON | 15 | Co Cambridge | 38.00 |
| | Heat Number - 7 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 45 | Katherine HEDLEY | 21 | Co Cambridge | 35.12 |
| 2 | 47 | Soraya SASSANI | 15 | Co Cambridge | 35.00 |
| 3 | 49 | Catherine MUMFORD | 16 | Co Cambridge | 33.88 |
| 4 | 51 | Georgina ROUGHSEDGE | 14 | Co Cambridge | 33.50 |
| 5 | 50 | Bryony ROWSEL | 14 | Co Cambridge | 33.83 |
| 6 | 48 | Isabella THOMSON | 15 | Co Cambridge | 34.33 |
| 7 | 46 | Helen STRUTHERS | 15 | Co Cambridge | 35.00 |
| 8 | 44 | Zoe OTHIENO | 14 | Co Cambridge | 35.27 |