EVENT 201 Mixed 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Aoife Hickey | 11 | Deepings | 12:10.14 |
| 3 | 2 | Leila Marandi | 11 | Bassetlaw SS | 12:10.13 |
| 4 | 3 | Mollie Smart | 11 | Coalville | 12:10.12 |
| 5 | 4 | Daisy Bailey | 13 | BelperMarlin | 12:10.11 |
| 6 | 5 | Jett Lockton | 13 | Braunstone | 12:10.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Jasmeen Singh | 14 | Hinckley | 12:10.09 |
| 2 | 7 | Milly Webb | 11 | Northampton | 12:10.08 |
| 3 | 8 | Shivani Sharma | 12 | Braunstone | 12:10.07 |
| 4 | 9 | Florence Lucas | 12 | Braunstone | 12:10.06 |
| 5 | 10 | Charlotte Lucas | 12 | Braunstone | 12:10.05 |
| 6 | 11 | Mia Lever | 13 | Worksop | 12:10.04 |
| 7 | 12 | Amelia Sheil | 13 | Derby Excel | 12:10.03 |
| 8 | 13 | Fraser Manley | 13 | Repton | 12:10.02 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Jakub Siedlak | 14 | Corby | 12:10.01 |
| 2 | 15 | Samuel Hurst | 22 | Derby Excel | 12:10.00 |
| 3 | 16 | Sam Heppleston | 12 | DerbyPhoenix | 12:09.60 |
| 4 | 17 | Bobby Wallis | 13 | Co Lincoln P | 12:03.60 |
| 5 | 18 | Ava Mackfall | 15 | Lincoln Vulc | 11:49.90 |
| 6 | 19 | Leo Barnett | 13 | Grantham | 11:41.00 |
| 7 | 20 | Evie Newman | 13 | Lincoln Vulc | 11:25.90 |
| 8 | 21 | Saxon Swann | 14 | Corby | 11:21.41 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 22 | Jessica Gilder | 14 | Hinckley | 11:21.00 |
| 2 | 23 | Evie Bramford | 14 | Hinckley | 11:19.50 |
| 3 | 24 | Jessica Currie | 13 | Coalville | 11:19.50 |
| 4 | 25 | Jessica Purser | 14 | Braunstone | 11:17.50 |
| 5 | 26 | Tristan Eke | 14 | Co Lincoln P | 11:15.90 |
| 6 | 27 | Callum Loynes | 13 | Co Lincoln P | 11:15.10 |
| 7 | 28 | Isla-Rose Wildish | 11 | Bassetlaw SS | 11:14.60 |
| 8 | 29 | Daniil Obuhov | 12 | Braunstone | 11:12.60 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 30 | Lara Ogdon | 12 | Bramcote | 11:06.13 |
| 2 | 31 | Miley Richardson | 12 | Co Lincoln P | 11:04.20 |
| 3 | 32 | Mackenzie Wainwright | 14 | Northampton | 11:02.28 |
| 4 | 33 | Elizabeth Baines | 15 | Hinckley | 10:59.20 |
| 5 | 34 | Alex Bartlam | 15 | Braunstone | 10:59.10 |
| 6 | 35 | Stevie Johnson | 14 | Worksop | 10:57.39 |
| 7 | 36 | Nika Buhharova | 15 | Corby | 10:56.55 |
| 8 | 37 | Eleanor Biriny | 14 | Lincoln Vulc | 10:55.10 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 38 | Alfie Grounsell | 12 | Bassetlaw SS | 10:55.06 |
| 2 | 39 | Kitty Sumner | 13 | Matlock | 10:54.27 |
| 3 | 40 | Georgia Parker | 14 | Corby | 10:54.23 |
| 4 | 41 | Peta Morley | 14 | Hinckley | 10:51.20 |
| 5 | 42 | Isla Fairhurst | 14 | Worksop | 10:50.10 |
| 6 | 43 | Phoebe Langlands | 15 | Calv Bing | 10:49.80 |
| 7 | 44 | Thomas Allan | 13 | Bramcote | 10:49.30 |
| 8 | 45 | Skylar Glendenning | 13 | Corby | 10:44.90 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 46 | Ellie Poulton-Burbank | 14 | Loughborough | 10:44.20 |
| 2 | 47 | Abigail Tomlinson | 12 | Corby | 10:44.06 |
| 3 | 48 | Alice Hunt | 14 | Derby Excel | 10:42.10 |
| 4 | 49 | Remi Berry | 13 | Co Lincoln P | 10:40.90 |
| 5 | 50 | Ethan Hunter | 15 | Lincoln Vulc | 10:39.80 |
| 6 | 51 | Andrei Obuhov | 14 | Braunstone | 10:36.70 |
| 7 | 52 | Eleanor Trahearn | 16 | Hinckley | 10:36.20 |
| 8 | 53 | Erika Clarke | 14 | Leic Peng | 10:35.80 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 54 | Darcie Willis | 18 | Eckington | 10:32.40 |
| 2 | 55 | Madeleine Heron | 13 | Derby Excel | 10:32.22 |
| 3 | 56 | Faye Eyton-Jones | 16 | Corby | 10:29.87 |
| 4 | 57 | Hollie Cowles | 14 | Braunstone | 10:29.00 |
| 5 | 58 | Oscar Venn | 13 | Northampton | 10:28.59 |
| 6 | 59 | Ava Carter | 13 | BelperMarlin | 10:28.50 |
| 7 | 60 | Alice Buckingham | 12 | Team Luton | 10:26.66 |
| 8 | 61 | Finley West | 14 | Co Lincoln P | 10:22.90 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 62 | Eva Gallagher | 16 | Corby | 10:18.30 |
| 2 | 63 | Roisin Power | 14 | DerbyPhoenix | 10:17.40 |
| 3 | 64 | Isobelle Rafferty | 14 | Bassetlaw SS | 10:17.10 |
| 4 | 65 | Harry Thomas | 15 | DerbyPhoenix | 10:17.00 |
| 5 | 66 | Connie Bunhejee | 14 | Derby Excel | 10:16.64 |
| 6 | 67 | Abigail Golynker | 15 | Co Leicester | 10:14.50 |
| 7 | 68 | Molly Bradley | 14 | Arnold | 10:11.97 |
| 8 | 69 | Jakub Kowalczyk | 14 | Hinckley | 10:08.10 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 70 | C Callaghan-Wetton | 16 | Sherwood | 10:03.91 |
| 2 | 71 | William King | 17 | Hinckley | 10:03.80 |
| 3 | 72 | Elena Aldenhoff-Kelly | 17 | Grantham | 10:03.80 |
| 4 | 73 | Tyler Shaw | 14 | Derby Excel | 9:59.03 |
| 5 | 74 | Phoebe Kerley | 14 | Swindon Dolp | 9:57.70 |
| 6 | 75 | James Lee | 13 | Derby Excel | 9:57.63 |
| 7 | 76 | Mia Nelson | 14 | Cheshunt | 9:57.40 |
| 8 | 77 | Olivia Male | 14 | Derby Excel | 9:56.61 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 78 | Ryan Hales | 17 | Hinckley | 9:53.10 |
| 2 | 79 | Daisy Tatlow-Turner | 15 | Chesterfield | 9:52.20 |
| 3 | 80 | Amy Walker | 16 | Worksop | 9:50.64 |
| 4 | 81 | Jacob Briers | 17 | Deepings | 9:48.80 |
| 5 | 82 | Phillippa Cutmore | 13 | Corby | 9:47.40 |
| 6 | 83 | Maddie Walden | 15 | Northampton | 9:45.52 |
| 7 | 84 | Lana Webb | 16 | Northampton | 9:43.80 |
| 8 | 85 | Lilly Tappern | 18 | Corby | 9:41.71 |
| Heat Number - 12 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 87 | David Bielawski | 16 | Northampton | 9:33.60 |
| 2 | 89 | Isaac Ebanks | 15 | Derby Excel | 9:27.70 |
| 3 | 91 | Finlay Bird | 15 | Long Eaton | 9:16.08 |
| 4 | 93 | Lawrence Chapman | 17 | Worksop | 9:13.90 |
| 5 | 92 | Jack Harris | 16 | Derby Excel | 9:15.40 |
| 6 | 90 | James Cash | 15 | Deepings | 9:23.00 |
| 7 | 88 | Beau Cunningham | 16 | Corby | 9:31.74 |
| 8 | 86 | Lilli-Rose Carr | 16 | Co Lincoln P | 9:37.30 |