- A6003 between A43 and A6014, Northamptonshire (Grid ref SP859843)
- A6003 between A43 and A6003/A6014, Northamptonshire (Grid ref SP860825)
- A6003 between A6014 and A427, Northamptonshire (Grid ref SP861880)
- A6003 between A6013 and A4300, Northamptonshire (Grid ref SP861785)
- A6003 between A4300 and A6900, Northamptonshire (Grid ref SP862795)
- A6003 between B672 and A47, Rutland (Grid ref SP863960)
- A6003 between A6116 and Northamptonshire boundary, Northamptonshire (Grid ref SP865920)
- A6003 between Leicestershire boundary and Leicestershire boundary, Leicestershire (Grid ref SP866930)
- A6003 between A427 and A6116, Northamptonshire (Grid ref SP866900)
- A6003 between A6900 and A6013, Northamptonshire (Grid ref SP866782)
- A6003 between Rutland boundary and B672, Rutland (Grid ref SP868935)
- A6003 between A509 and A6900, Northamptonshire (Grid ref SP870779)
- A6003 between A47(T) and A606, Rutland (Grid ref SK877050)
- A6003 between A6098 and A509, Northamptonshire (Grid ref SP877774)
- A6003 between A6/A14 and A6098, Northamptonshire (Grid ref SP894769)