| Personal Details | |
| Name | William Armstrong |
| Known As | William |
| Year of Birth | 2011 |
| Eligibility Category | Open/Male |
| Membership Details | |||
| Member Number | 1627983 | ||
| Member Status | Current | ||
| Ranked Club | Tadcaster York Sport Swim Squad | ||
| Country of International Representation | England | ||
| Membership Categories |
| SE Club Compete |
| Clubs & Organisations | |
| Club | Ranked |
| Tadcaster York Sport Swim Squad | Yes |
| Click For Personal Best | 2024 Short Course | Short Course PB | 2024 Long Course | Long Course PB |
| 50m Freestyle | . | 35.44 | . | . |
| 100m Freestyle | . | 1:16.77 | 1:19.44 | 1:19.44 |
| 200m Freestyle | . | 3:12.30 | 2:59.25 | 2:59.25 |
| 400m Freestyle | . | 5:37.58 | . | . |
| 800m Freestyle | . | . | . | . |
| 1500m Freestyle | . | . | . | . |
| 50m Breaststroke | . | 48.08 | . | 49.87 |
| 100m Breaststroke | . | 1:54.80 | 1:46.88 | 1:46.88 |
| 200m Breaststroke | . | 3:43.84 | . | . |
| 50m Butterfly | . | 49.20 | . | . |
| 100m Butterfly | . | . | . | . |
| 200m Butterfly | . | . | . | . |
| 50m Backstroke | . | 40.45 | 41.11 | 41.11 |
| 100m Backstroke | . | 1:29.12 | 1:32.13 | 1:32.13 |
| 200m Backstroke | . | . | 3:07.96 | 3:07.96 |
| 200m Individual Medley | . | . | 3:11.06 | 3:11.06 |
| 400m Individual Medley | . | . | . | . |
| 100m Individual Medley | . | 1:31.11 | . | . |
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