| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Breaststroke | 1:59.26 | KBM Heats & Finals | 2026-02-20 |
| 100m Freestyle | 1:37.78 | KBM Heats & Finals | 2026-02-20 |
| 200m Freestyle | 3:23.54 | KBM Heats & Finals | 2026-02-20 |
| 200m IM | 3:52.75 | Beast Cup 2026 | 2026-01-10 |
| 50m Backstroke | 50.10 | KBM Heats & Finals | 2026-02-20 |
| 50m Breaststroke | 52.71 | Beast Cup 2026 | 2026-01-10 |
| 50m Butterfly | 56.27 | KBM Pentathlon | 2025-10-19 |
| 50m Freestyle | 44.41 | KBM Heats & Finals | 2026-02-20 |
Thomson, James's top personal bests include 100m Breaststroke (1:59.26), 100m Freestyle (1:37.78), 200m Freestyle (3:23.54), 200m IM (3:52.75), 50m Backstroke (50.10).
Thomson, James swims for Kingston Blue Marlins.
Thomson, James has competed in 3 meets.