- U, Mathern Chepstow, Monmouthshire (Grid ref ST521913)
- A466 between A 48T and M48 JCT 2, Monmouthshire (Grid ref ST532920)
- A466 between A 48T and M48 Junction 2, Monmouthshire (Grid ref ST532920)
- U, Bulwark Chepstow, Monmouthshire (Grid ref ST537916)
- U, Thornwell Road, Monmouthshire (Grid ref ST536923)
- M48 between J2 and Monmouthshire boundary, Monmouthshire (Grid ref ST540914)
- M48 between M4 (23) and J2, Monmouthshire (Grid ref ST500911)
- A48 between A466 and England, Monmouthshire (Grid ref ST530934)
- A48 between Monmouthshire boundary and A466, Monmouthshire (Grid ref ST498903)
- A466 between B4293 and A48, Monmouthshire (Grid ref ST524940)
- M48 between Gloucestershire boundary and Gloucestershire boundary, Gloucestershire (Grid ref ST551907)
- C, Buttington Hill, Gloucestershire (Grid ref ST547933)
- B4293, Itton Road, Monmouthshire (Grid ref ST511948)
- U, Sandy Lane, Monmouthshire (Grid ref ST483882)
- M48 between South Gloucestershire boundary and J1, South Gloucestershire (Grid ref ST569896)
- M4 between South Gloucestershire boundary and J22, South Gloucestershire (Grid ref ST526860)
- A403 between B4055 and M48, South Gloucestershire (Grid ref ST560875)
- U, N/a, South Gloucestershire (Grid ref ST573895)
- M4 between J23 and Monmouthshire boundary, Monmouthshire (Grid ref ST480872)
- B4228, N/a, Gloucestershire (Grid ref ST546970)