Last updated: 4 September 2023.
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Male
| Event | Name | Time | Date | Competition | Venue |
|---|---|---|---|---|---|
| 50m Freestyle | Gabriel Shepherd | 00:23.66 | 21/08/2023 | World School Sports Games | Rio de Janeiro |
| 100m Freestyle | Gabriel Shepherd | 00:51.47 | 25/07/2023 | British Summer Championships | Sheffield |
| 200m Freestyle | Gabriel Shepherd | 01:54.18 | 23/07/2023 | British Summer Championships | Sheffield |
| 400m Freestyle | Kourosh Khodakhah | 04:04.54 | 04/04/2023 | British Championships | Sheffield |
| 800m Freestyle | Kourosh Khodakhah | 08:23.45 | 08/04/2023 | British Championships | Sheffield |
| 1500m Freestyle | Kourosh Khodakhah | 16:05.44 | 25/07/2023 | European Youth Olympic Festival | Maribor |
| 50m Backstroke | Daniel Ransom | 00:28.68 | 30/04/2023 | SENER Open/Youth Championships | Sheffield |
| 100m Backstroke | Daniel Ransom | 00:59.12 | 24/07/2023 | British Summer Championships | Sheffield |
| 200m Backstroke | Myles Stirk | 02:08.53 | 29/07/2015 | British Summer Championships | Sheffield |
| 50m Breaststroke | Daniel Ransom | 00:31.02 | 29/04/2023 | SENER Open/Youth Championships | Sheffield |
| 100m Breaststroke | Daniel Ransom | 01:04.92 | 23/07/2023 | British Summer Championships | Sheffield |
| 200m Breaststroke | Daniel Ransom | 02:22.05 | 26/07/2023 | British Summer Championships | Sheffield |
| 50m Butterfly | Matthew Just | 00:25.67 | 15/04/2023 | City of Leeds National Qualifier | Leeds |
| 100m Butterfly | Matthew Just | 00:57.14 | 26/07/2023 | British Summer Championships | Leeds |
| 200m Butterfly | Kourosh Khodakhah | 02:05.65 | 05/04/2023 | British Championships | Sheffield |
| 200m Individual Medley | Kourosh Khodakhah | 02:09.53 | 15/04/2023 | City of Leeds National Qualifier | Leeds |
| 400m Individual Medley | Kourosh Khodakhah | 04:30.59 | 06/04/2023 | British Championships | Sheffield |
Female
| Event | Name | Time | Date | Competition | Venue | |
|---|---|---|---|---|---|---|
| 50m Freestyle | Magdalena Cygan | 00:26.26 | 12/04/2014 | British Championships | Glasgow | |
| 100m Freestyle | Magdalena Cygan | 00:57.13 | 14/04/2014 | British Championships | Glasgow | |
| 200m Freestyle | Leah Crisp | 02:02.72 | 19/07/2017 | Commonwealth Youth Games | Bahamas | |
| 400m Freestyle | Leah Crisp | 04:16.36 | 21/07/2017 | Commonwealth Youth Games | Bahamas | |
| 800m Freestyle | Danielle Hall-Jackson | 08:44.58 | 05/08/2010 | National Youth Championships | Sheffield | |
| 1500m Freestyle | Danielle Hall-Jackson | 16:46.52 | 03/08/2010 | National Youth Championships | Sheffield | |
| 50m Backstroke | Emma Wood | 00:30.71 | 27/07/2023 | British Summer Championships | Sheffield | |
| 100m Backstroke | Sophie Hobbah | 01:04.51 | 26/07/2017 | British Summer Championships | Sheffield | |
| 200m Backstroke | Sophie Hobbah | 02:16.80 | 28/07/2017 | British Summer Championships | Sheffield | |
| 50m Breaststroke | Layla Black | 00:32.49 | 06/07/2016 | European Junior Championships | Hungary | |
| 100m Breaststroke | Layla Black | 01:09.76 | 31/07/2017 | British Summer Championships | Sheffield | |
| 200m Breaststroke | Layla Black | 02:28.26 | 13/04/2016 | British Championships | Glasgow | |
| 50m Butterfly | Amelia Clynes | 00:28.24 | 28/07/2015 | British Summer Championships | Sheffield | |
| 100m Butterfly | Ciara Schlosshan | 00:59.55 | BR | 30/06/2017 | European Junior Championships | Israel |
| 200m Butterfly | Ciara Schlosshan | 02:10.48 | 29/06/2017 | European Junior Championships | Israel | |
| 200m Individual Medley | Ciara Schlosshan | 02:13.93 | 26/08/2017 | World Junior Championships | Indianapolis | |
| 400m Individual Medley | Georgia Coates | 04:44.60 | 09/07/2014 | European Junior Championships | Dordrecht |