| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Barnaby GARLAND | 18 | Chelsea&West | : . |
| 1 | 2 | Tom WIGGINS | 18 | Co Peterboro | : . |
| 2 | 3 | Luke SPAIN | 25 | Hillingdon | : . |
| 3 | 4 | Miles CLARKE | 17 | Ealing | : . |
| 4 | 5 | Jakob GOODMAN | 17 | Thanet Swim | : . |
| 5 | 6 | Sebastian STEWART | 17 | Sevenoaks | : . |
| 6 | 7 | Cole JAMES | 17 | Hatfield | : . |
| 7 | 8 | Jack GRAHAM | 20 | Co Liverpool | : . |
| 8 | 9 | Lewis FRASER | 17 | Swansea Aq | : . |
| 9 | 10 | Dan SMITH | 28 | Boldmere | : . |