EVENT 109 Mixed 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Paul Clarke | 82 | Beaver Mast | 10:01.48 |
| 4 | 3 | Athene Brown | 44 | B C & P Mast | 6:41.25 |
| 5 | 2 | Diane Bramley | 45 | Lancaster | 8:24.76 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Peter Stephens | 77 | Royal Navy | 7:36.66 |
| 3 | 7 | Nick Minns | 71 | Co Lincoln P | 6:16.97 |
| 4 | 9 | Juliette Rampley | 35 | Long Eaton | 5:38.27 |
| 5 | 8 | Edward Swann | 43 | Cosacss | 6:14.79 |
| 6 | 6 | Lynne Dawson | 57 | Chapeltown | 6:34.16 |
| 7 | 4 | Valerie Thorp | 71 | Derby Excel | 7:03.36 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Nuala Muir-Cochrane | 60 | Poole | 5:32.37 |
| 2 | 13 | Joseph Doherty | 26 | Derby Excel | 5:42.15 |
| 3 | 15 | Mark Jones | 64 | Warrington M | 5:32.92 |
| 4 | 17 | Gregan Clarkson | 42 | KingstonHull | 5:17.29 |
| 5 | 16 | Nicola Latty | 53 | Holywell | 5:13.01 |
| 6 | 14 | Carla King | 41 | South Beds | 5:32.03 |
| 7 | 12 | Alice Pinney | 25 | Deepings | 5:36.29 |
| 8 | 10 | Nicholas Hatton | 39 | Unattached | 5:56.31 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | Dean Heaps | 32 | Preston | 5:05.41 |
| 2 | 21 | Samuel Wortley | 23 | Derby Excel | 5:16.12 |
| 3 | 23 | Alex Thurston | 43 | NottmLeander | 4:45.47 |
| 4 | 25 | Daniel Mills | 33 | Trafford Met | 4:17.02 |
| 5 | 24 | George Russell | 27 | Rotherham Mo | 4:36.46 |
| 6 | 22 | Samuel Hurst | 21 | Derby Excel | 4:49.44 |
| 7 | 20 | Steven Paine | 49 | BelperMarlin | 5:04.86 |
| 8 | 18 | Stuart Steele | 48 | Sandwell | 5:24.64 |