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U, Shenley Lane, Hertfordshire (Grid ref TL173037) U, High Street, Hertfordshire (Grid ref TL177043) A1081 between M25 Jct 22 and A414, Hertfordshire (Grid ref TL185040) B556, Bell Lane, Hertfordshire (Grid ref TL181027) B556, Harper Lane, Hertfordshire (Grid ref TL174023) U, Nightingale Lane, Hertfordshire (Grid ref TL174050) M25 between J21A and J22, Hertfordshire (Grid ref TL162027) A1081 between B556 W and M25 (midpoint), Hertfordshire (Grid ref TL190032) U, St Vincent Drive, Hertfordshire (Grid ref TL165061) A414 between M10 and A1081, Hertfordshire (Grid ref TL150048) A5183 between Park Street Lane and M10, Hertfordshire (Grid ref TL146045) A1081 between A414 and A5183, Hertfordshire (Grid ref TL160061) C, Coursers Road, Hertfordshire (Grid ref TL201046) C174, Colney Heath Lane, Hertfordshire (Grid ref TL180069) 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) A405 between Tippendell Lane and M10, Hertfordshire (Grid ref TL140046) A5183 between M10 and A1081, Hertfordshire (Grid ref TL142056) A405 between M25 and Tippendell Lane, St Albans, Hertfordshire (Grid ref TL136039) U, Beaumont Avenue, Hertfordshire (Grid ref TL169074)