| 2003 LHF Healthplan National League | |
|---|---|
| League | National League |
| National League One | |
| Champions | Salford City Reds |
| League leaders | Salford City Reds |
| Promotion and relegation | |
| Promoted from National League One | Salford City Reds |
| Relegated to National League Two | Dewsbury Rams |
| National League Two | |
| Champions | Keighley Cougars |
| League leaders | Sheffield Eagles |
| Promotion and relegation | |
| Promoted from National League Two | Keighley Cougars |
| National League Three | |
| Champions | Woolston Rovers |
| League leaders | Bradford Dudley Hill |
The 2003 National Leagues (known as the LHF National Leagues due to sponsorship) are the second, third and fourth divisions of rugby league played in Britain.
National Leagues One and Two were made up of the 18 clubs that competed in the Northern Ford Premiership during the previous season, plus the London Skolars and the York City Knights. National League Three consisted of ten additional teams from the amateur leagues. There was no automatic promotion and relegation with National League Two, but the RFL hoped to introduce this in the future.