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M48 between South Gloucestershire boundary and J1, South Gloucestershire (Grid ref ST569896) U, N/a, South Gloucestershire (Grid ref ST573895) M48 between Gloucestershire boundary and Gloucestershire boundary, Gloucestershire (Grid ref ST551907) A403 between B4055 and M48, South Gloucestershire (Grid ref ST560875) M48 between J1 and M4 (21), South Gloucestershire (Grid ref ST590872) M4 between J22 and J21, South Gloucestershire (Grid ref ST580865) M48 between J2 and Monmouthshire boundary, Monmouthshire (Grid ref ST540914) U, Bulwark Chepstow, Monmouthshire (Grid ref ST537916) C, Greenditch Street, South Gloucestershire (Grid ref ST591864) U, Thornwell Road, Monmouthshire (Grid ref ST536923) C, Buttington Hill, Gloucestershire (Grid ref ST547933) 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, Mathern Chepstow, Monmouthshire (Grid ref ST521913) A48 between A466 and England, Monmouthshire (Grid ref ST530934) A403 between Unclassified Road and B4064, South Gloucestershire (Grid ref ST547845) M4 between South Gloucestershire boundary and J22, South Gloucestershire (Grid ref ST526860) B4055, Marsh Common Road, South Gloucestershire (Grid ref ST561840) C, Hazel Lane, South Gloucestershire (Grid ref ST621874) M4 between J21 and J20 / M5, South Gloucestershire (Grid ref ST610850)