EVENT 12 Men/Women 18 Yrs/Over 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Paul Clarke | 79 | Beaver Mast | 59.00 |
| 3 | 2 | Michael Read | 80 | Sudbury | 55.00 |
| 4 | 3 | Patricia Jackson | 74 | East Anglian | 54.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Morgan Lee | 38 | Halstead | 45.00 |
| 2 | 5 | Jason Smit | 45 | TransplantSC | 44.50 |
| 3 | 6 | Richard Livings | 51 | Sudbury | 44.00 |
| 4 | 7 | Brooke Tinniswood | 21 | Flitwick | 42.92 |
| 5 | 8 | Nora For-Szabo | 49 | Diss Otters | 41.21 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Alex Jenkins | 29 | BelperMarlin | 38.81 |
| 2 | 10 | Sharon Perry | 49 | West Suffolk | 37.50 |
| 3 | 11 | Ian Murray | 64 | Flitwick | 37.39 |
| 4 | 12 | Alice Dinsdale-Young | 33 | Otter | 37.00 |
| 5 | 13 | Louise Peddelty | 40 | teamipswich | 36.22 |
| 6 | 14 | Mike Foskett | 69 | Hemel Hemp | 36.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Katrina Farrall | 51 | Basildon Ph | 35.25 |
| 2 | 16 | David Bradford | 63 | Etwall | 35.00 |
| 3 | 17 | Chelsea Roff | 32 | Bo Newham | 35.00 |
| 4 | 18 | Charlotte Allen | 21 | West Suffolk | 34.57 |
| 5 | 19 | Olivia Lillywhite | 25 | Biggleswade | 34.42 |
| 6 | 20 | Mark Wallman | 45 | Biggleswade | 33.40 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Kirsty Russell | 23 | Co Newport | 33.00 |
| 2 | 22 | Mark Banwell | 60 | Co Ely | 32.50 |
| 3 | 23 | Sian Jones | 22 | Co Cambridge | 32.50 |
| 4 | 24 | Jeanne Petit | 51 | Leic Peng | 32.48 |
| 5 | 25 | Hayley Brown | 38 | Witham Dolph | 32.20 |
| 6 | 26 | D Pethers | 51 | Basildon Ph | 32.15 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 27 | Marcel Scholten | 55 | Modernian | 32.00 |
| 2 | 28 | Walker Brierley | 58 | Deben | 32.00 |
| 3 | 29 | Manos Georgiadis | 50 | Deben | 32.00 |
| 4 | 30 | Karl Sharman | 52 | Deben | 32.00 |
| 5 | 31 | Ian Wallace | 51 | Brentwood | 32.00 |
| 6 | 32 | Henry Fincher | 39 | Bo Newham | 31.60 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 33 | William Marsh | 27 | Otter | 31.60 |
| 2 | 34 | Liz Woolner | 54 | Flitwick | 31.50 |
| 3 | 35 | Tanya Alexander | 39 | Team Waveney | 31.09 |
| 4 | 36 | Oliver Bumstead | 38 | Team Waveney | 31.00 |
| 5 | 37 | Rob Lucas | 50 | Norwich WP | 31.00 |
| 6 | 38 | Alistair Shaw | 41 | Flitwick | 30.41 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 40 | Apostolos Fournaris | 43 | Oea-nab | 29.92 |
| 2 | 42 | Jake Lloyd | 26 | Harlow Pen | 29.00 |
| 3 | 44 | Peter Stewart | 39 | Teddington | 27.56 |
| 4 | 43 | Karsten Bach | 31 | Co Cambridge | 27.70 |
| 5 | 41 | Maddie Wright | 19 | East Anglian | 29.25 |
| 6 | 39 | Jack Burchell | 27 | Co Cambridge | 30.00 |