| 18:20 - 400 METRES - Men - Semi-Final - Heat 1 | START LIST |
| First 3 of each heat (Q) qualified | |
| |
| Personal Best | Season Best | ||||||
| 1 | | Brian MURPHY | IRL | 47.83 | 48.98 | | |
| 2 | | Patrick NORTH | SWINDON | 47.64 | 47.64 | | |
| 3 | | Scott HUGHSON | EDINBURGH | 48.00 | 48.00 | | |
| 4 | | Rhys SMITH | LEEDS | 48.44 | 48.44 | | |
| 5 | | Richard BUCK | YORK | 46.22 | 47.19 | | |
| 6 | | Patrick SWAN | GATESHEAD | 48.30 | 48.64 | | |
| 18:25 - 400 METRES - Men - Semi-Final - Heat 2 | START LIST |
| First 3 of each heat (Q) qualified | |
| |
| Personal Best | Season Best | ||||||
| 1 | | Nicholas HOGAN | IRL | 48.36 | 48.57 | | |
| 2 | | Adebowale ADEMUYEWO | SALE | 47.59 | 48.84 | | |
| 3 | | Nick LEAVEY | WOODFORD G | 46.60 | 47.69 | | |
| 4 | | Luke LENNON FORD | BIRCHFIELD | 48.70 | 48.70 | | |
| 5 | | Nigel LEVINE | BEDFORD | 47.06 | 47.70 | | |
| 6 | | Tom DRUCE | CHANNEL IS | 47.96 | 47.52 | | |