| Final 19:25 |   | time | gap | L |   | 50m | 100m | 150m |  | 1. Duncan Scott |   Scotland | 1:45.02 |   |   | 5 | 24.91s | 51.54s | 1:18.45 |  | 2. Tom Dean |   England | 1:45.41 | +0.39s |   | 3 | 24.62s | 51.51s | 1:18.56 |  | 3. Elijah Winnington |   Australia | 1:45.62 | +0.60s |   | 4 | 24.91s | 51.94s | 1:19.04 |  | 4. Mack Horton |   Australia | 1:46.78 | +1.76s |   | 6 | 25.91s | 52.46s | 1:19.97 |  | 5. Matt Richards |   Wales | 1:47.19 | +2.17s |   | 2 | 24.73s | 51.99s | 1:19.41 |  | 6. Matthew Sates |   South Africa | 1:47.75 | +2.73s |   | 1 | 24.67s | 51.66s | 1:19.70 |  | 7. Calum Jarvis |   Wales | 1:47.84 | +2.82s |   | 7 | 25.34s | 52.56s | 1:20.16 |  | 8. Joe Litchfield |   England | 1:48.87 | +3.85s |   | 8 | 25.14s | 52.67s | 1:20.67 |  | 1. |   Australia | 7:04.96 | GR |   | 4 |  |  | Elijah Winnington 1:46.36, Flynn Southam 1:46.08, Zac Incerti 1:46.08, Mack Horton 1:46.44 |  | 2. |   England | 7:07.50 |   |   | 5 |  |  | James Guy 1:46.87, Jacob Whittle 1:47.89, Joe Litchfield 1:47.59, Tom Dean 1:45.15 |  | 3. |   Scotland | 7:09.33 |   |   | 2 |  |  | Stephen Milne 1:49.30, Evan Jones 1:47.64, Mark Szaranek 1:47.91, Duncan Scott 1:44.48 |  | 4. |   Wales | 7:10.64 |   |   | 3 |  |  | Calum Jarvis 1:47.38, Matt Richards 1:46.47, Dan Jones 1:48.79, Kieran Bird 1:48.00 |  | 5. |   Canada | 7:12.68 |   |   | 8 |  |  | Ruslan Gaziev 1:48.73, Finlay Knox 1:48.03, Jeremy Bagshaw 1:49.22, Javier Acevedo 1:46.70 |  | 6. |   South Africa | 7:13.76 |   |   | 6 |  |  | Matthew Sates 1:47.07, Chad le Clos 1:47.47, Andrew Ross 1:49.36, Pieter Coetze 1:49.86 |  | 7. |   Isle of Man | 7:43.70 |   |   | 7 |  |  | Alex Bregazzi 1:52.20, Joel Watterson 1:55.65, Peter Allen 1:57.48, Harry Robinson 1:58.37 |  | 8. |   Gibraltar | 8:08.83 |   |   | 1 |  |  | Matt Savitz 2:01.67, Jordan Gonzalez 2:04.87, Aidan Carroll 2:01.58, Johnpaul Balloqui 2:00.71 |   
|  38 Competitors from 25 Nations. |   
|
 Heats - Saturday, 30th July 10:30 |  | Best 8 times advanced to Final.  |   
| Heat 5 |   | time | gap | L |   | Rk | 50m | 100m | 150m |  | 3. Tom Dean |   England | 1:47.19 | +0.32s | Q | 4 | 3. |  | 4. Mack Horton |   Australia | 1:47.37 | +0.50s | Q | 3 | 4. |  | 5. Matt Richards |   Wales | 1:47.59 | +0.72s | Q | 5 | 5. |  | 9. Jack McMillan |   Northern Ireland | 1:48.51 | +1.64s | R | 6 | 9. |  | 11.Khiew Hoe Yean |   Malaysia | 1:48.85 | +1.98s |   | 2 | 11. |  | 16.Stephen Milne |   Scotland | 1:49.56 | +2.69s |   | 1 | 16. |  | 17.Jeremy Bagshaw |   Canada | 1:49.57 | +2.70s |   | 7 | 17. |  | 23.Alex Bregazzi |   Isle of Man | 1:52.33 | +5.46s |   | 8 | 23. |   
| Heat 4 |   | time | gap | L |   | Rk | 50m | 100m | 150m |  | 2. Duncan Scott |   Scotland | 1:47.16 | +0.29s | Q | 4 | 2. |  | 6. Calum Jarvis |   Wales | 1:48.22 | +1.35s | Q | 3 | 6. |  | 8. Joe Litchfield |   England | 1:48.44 | +1.57s | Q | 6 | 8. |  | 13.Kieran Bird |   Wales | 1:48.99 | +2.12s |   | 7 | 13. |  | 14.Evan Jones |   Scotland | 1:49.00 | +2.13s |   | 1 | 14. |  | 15.Zac Incerti |   Australia | 1:49.54 | +2.67s |   | 5 | 15. |  | 19.Wesley Roberts |   Cook Islands | 1:49.83 | +2.96s |   | 2 | 19. |  | 22.Arvin Chahal |   Malaysia | 1:51.73 | +4.86s |   | 8 | 22. |   
| Heat 3 |   | time | gap | L |   | Rk | 50m | 100m | 150m |  | 1. Elijah Winnington |   Australia | 1:46.87 |   | Q | 4 | 1. |  | 7. Matthew Sates |   South Africa | 1:48.25 | +1.38s | Q | 5 | 7. |  | 10.Ruslan Gaziev |   Canada | 1:48.59 | +1.72s | R | 6 | 10. |  | 12.Cameron Kurle |   England | 1:48.94 | +2.07s |   | 3 | 12. |  | 18.Andrew Ross |   South Africa | 1:49.75 | +2.88s |   | 7 | 18. |  | 20.Cameron Gray |   New Zealand | 1:50.35 | +3.48s |   | 2 | 20. |  | 21.James Freeman |   Botswana | 1:50.63 | +3.76s |   | 1 | 21. |  | 25.Kushagra Rawat |   India | 1:54.56 | +7.69s |   | 8 | 25. |   
| Heat 2 |   | time | gap | L |   | Rk | 50m | 100m | 150m |  | 24.James Allison |   Cayman Islands | 1:54.14 | +7.27s |   | 4 | 24. |  | 26.Luke-Kennedy Thompson |   Bahamas | 1:55.44 | +8.57s |   | 2 | 26. |  | 27.Christos Manoli |   Cyprus | 1:56.16 | +9.29s |   | 6 | 27. |  | 28.Peter Allen |   Isle of Man | 1:57.48 | +10.61s |   | 3 | 28. |  | 29.Collins Saliboko |   Tanzania | 1:57.76 | +10.89s |   | 1 | 29. |  | 32.Monyo Maina |   Kenya | 1:59.72 | +12.85s |   | 7 | 32. |  | 33.Ollie Brehaut |   Jersey | 2:00.62 | +13.75s |   | 5 | 33. |  | 35.Matt Savitz |   Gibraltar | 2:01.46 | +14.59s |   | 8 | 35. |   
| Heat 1 |   | time | gap | L |   | Rk | 50m | 100m | 150m |  | 30.Tyler Fred |   Seychelles | 1:58.46 | +11.59s |   | 6 | 30. |  | 31.Samuel Lowe |   Guernsey | 1:59.45 | +12.58s |   | 5 | 31. |  | 34.Temafa Yalimaiwai |   Fiji | 2:00.87 | +14.00s |   | 4 | 34. |  | 36.Kow Jackson |   Ghana | 2:10.24 | +23.37s |   | 3 | 36. |  | 37.Stefan Thomas |   Saint Helena | 2:12.70 | +25.83s |   | 2 | 37. |  | 38.William Caswell |   Saint Helena | 2:15.39 | +28.52s |   | 7 | 38. |   
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