| Personal Details | |
| Name | Theo Siddorn |
| Known As | Theo |
| Year of Birth | 2008 |
| Eligibility Category | Open/Male |
| Membership Details | |||
| Member Number | 1361255 | ||
| Member Status | Current | ||
| Ranked Club | Louth Dolphins SC | ||
| Country of International Representation | England | ||
| Membership Categories |
| SE Club Compete |
| Clubs & Organisations | |
| Club | Ranked |
| Louth Dolphins SC | Yes |
| Click For Personal Best | 2024 Short Course | Short Course PB | 2024 Long Course | Long Course PB |
| 50m Freestyle | 26.87 | 26.87 | 27.93 | 27.93 |
| 100m Freestyle | . | 1:03.04 | . | 1:08.89 |
| 200m Freestyle | . | 2:32.05 | . | . |
| 400m Freestyle | . | 5:18.38 | . | . |
| 800m Freestyle | . | . | . | . |
| 1500m Freestyle | . | . | . | . |
| 50m Breaststroke | 36.80 | 36.80 | . | 42.20 |
| 100m Breaststroke | . | 1:25.59 | 1:26.57 | 1:26.57 |
| 200m Breaststroke | . | 3:22.10 | . | . |
| 50m Butterfly | 31.75 | 31.75 | . | 34.61 |
| 100m Butterfly | . | 1:14.68 | 1:19.42 | 1:19.42 |
| 200m Butterfly | . | . | . | . |
| 50m Backstroke | 34.21 | 33.34 | 35.22 | 35.22 |
| 100m Backstroke | . | 1:15.01 | . | 1:24.98 |
| 200m Backstroke | . | 3:28.19 | . | . |
| 200m Individual Medley | . | 2:50.63 | . | 3:55.70 |
| 400m Individual Medley | . | 6:15.73 | . | . |
| 100m Individual Medley | 1:14.52 | 1:12.15 | . | . |
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