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U, St Michael's Street, Hertfordshire (Grid ref TL136073) A4147 between King Harry Lane roundabout and A5183, Hertfordshire (Grid ref TL132070) A5183 between A4147 and A4147, Hertfordshire (Grid ref TL139077) A4147 between A5183 and A1081, Hertfordshire (Grid ref TL141077) A5183 between A1081 and A4147, Hertfordshire (Grid ref TL143075) U, King Harry Lane, Hertfordshire (Grid ref TL136064) A1081 between A5183 and A4147, Hertfordshire (Grid ref TL148074) A1081 between A4147 and B651, Hertfordshire (Grid ref TL150077) A1081 between Sandridgebury Lane and B651 Stonecross, Hertfordshire (Grid ref TL150084) A5183 between M10 and A1081, Hertfordshire (Grid ref TL142056) U, Batchwood Gardens, Hertfordshire (Grid ref TL149087) U, Old Harpenden Road, Hertfordshire (Grid ref TL150088) M10 between M1(7) and J1, Hertfordshire (Grid ref TL142051) A414 between M1 Junction 7 and Roundabout A414, A5183 and A405, Hertfordshire (Grid ref TL142051) U, Battlefield Road, Hertfordshire (Grid ref TL157082) A1057 between A1081/A4147 and Lyon Way, Hertfordshire (Grid ref TL160072) A1081 between A414 and A5183, Hertfordshire (Grid ref TL160061) A405 between Tippendell Lane and M10, Hertfordshire (Grid ref TL140046) U, Sandfield Road, Hertfordshire (Grid ref TL162073) A414 between M10 and A1081, Hertfordshire (Grid ref TL150048)