EVENT 103 Mens 18 Yrs/Over 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 2 | Keith Lamb | 61 | Ashington | 1:47.00 |
| 2 | 4 | Brian Taylor | 68 | Adwick | 1:30.00 |
| 3 | 6 | Christopher Williams | 43 | Billingham | 1:30.00 |
| 4 | 5 | Philip Robertson | 45 | Ashington | 1:30.00 |
| 5 | 3 | Richard Adams | 68 | Duns | 1:46.70 |
| 6 | 1 | Norman Stephenson | 74 | Co Sund'land | 1:49.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 8 | Richard Witty | 49 | King'f Scar | 1:27.00 |
| 2 | 10 | Myles Little | 49 | Carlisle Aq | 1:22.00 |
| 3 | 12 | Nick Valentine | 37 | Newcastle | 1:13.00 |
| 4 | 11 | Nicholas Gowland | 22 | Billingham | 1:14.12 |
| 5 | 9 | Alan Weddell | 46 | Ashington | 1:24.00 |
| 6 | 7 | David Charlton | 37 | Boldon | 1:28.29 |