EVENT 701 Boys Open 100m Butterfly - Heats
Not Competing : 8,16,27,28
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 2 | Naythan AUNG | 10 | Colchester | 2:57.78 |
| 2 | 4 | Manfred BATTLE | 12 | Stowmarket | 1:13.17 |
| 3 | 6 | Reese HOUSDEN | 12 | Hatfield | 1:12.41 |
| 4 | 9 | Thomas CLARE | 12 | teamipswich | 1:10.91 |
| 5 | 7 | Charles WHYTE | 12 | West Suffolk | 1:12.30 |
| 6 | 5 | Mason HUNNISETT | 11 | Basildon Ph | 1:12.95 |
| 7 | 3 | Samuel PERKS | 11 | Chelmsford | 1:14.60 |
| 8 | 1 | Aaron LAMBIE | 10 | Thurrock | 2:57.93 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 13 | Harry WHITEMAN | 13 | Co Peterboro | 1:09.70 |
| 2 | 20 | Samuel PECK | 13 | UEA Norwich | 1:06.00 |
| 3 | 26 | Ben HARRISON | 13 | Potters Bar | 1:04.69 |
| 4 | 34 | Nathan HUGHES | 13 | Hatfield | 1:02.72 |
| 5 | 31 | Louis SPONG | 14 | DunmowAtlant | 1:03.72 |
| 6 | 23 | Harry EADE | 13 | teamipswich | 1:05.31 |
| 7 | 17 | Harry CONSTANTINE | 13 | Dunstable | 1:08.32 |
| 8 | 10 | Jack BOWYER | 12 | Colchester | 1:10.90 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 14 | Mason BRAND | 12 | Berkhamsted | 1:08.67 |
| 2 | 21 | Luke SUGDEN | 14 | Hatfield | 1:05.97 |
| 3 | 29 | Ryan SMITH | 14 | UEA Norwich | 1:04.00 |
| 4 | 35 | Benjamin GARRATT | 14 | Hatfield | 1:02.60 |
| 5 | 32 | Andrew MARTINDALE | 14 | Thurrock | 1:03.66 |
| 6 | 24 | Callum DAVIS | 14 | Bishop Stort | 1:05.02 |
| 7 | 18 | Harry NICHOLLS | 13 | Basildon Ph | 1:06.81 |
| 8 | 11 | Harvey NORMAN | 12 | Co Peterboro | 1:10.76 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 15 | Cameron ALSTON | 13 | Bo Southend | 1:08.63 |
| 2 | 22 | James WOODWARD | 14 | Potters Bar | 1:05.57 |
| 3 | 30 | Jamie SCHOLES | 14 | Co Peterboro | 1:03.80 |
| 4 | 36 | Dominic SCIFO | 14 | teamipswich | 59.60 |
| 5 | 33 | Oliver NEWTON | 14 | Wisbech | 1:03.19 |
| 6 | 25 | Charlie BODEN | 13 | Chelmsford | 1:04.75 |
| 7 | 19 | Kieran WATKINS | 14 | Stevenage | 1:06.35 |
| 8 | 12 | Matthew TITMAN | 12 | Co Cambridge | 1:10.20 |