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B556, Bell Lane, Hertfordshire (Grid ref TL181027) B556, Harper Lane, Hertfordshire (Grid ref TL174023) A1081 between B556 W and M25 (midpoint), Hertfordshire (Grid ref TL190032) U, Shenley Lane, Hertfordshire (Grid ref TL173037) A1081 between M25 Jct 22 and A414, Hertfordshire (Grid ref TL185040) U, High Street, Hertfordshire (Grid ref TL177043) M25 between J21A and J22, Hertfordshire (Grid ref TL162027) U, Nightingale Lane, Hertfordshire (Grid ref TL174050) C, Coursers Road, Hertfordshire (Grid ref TL201046) U, Williams Way, Hertfordshire (Grid ref TQ169999) C, London Road, Hertfordshire (Grid ref TQ194999) U, Newberries Avenue, Hertfordshire (Grid ref TQ171996) A5183 between A411 and Park Street Lane, St Albans, Hertfordshire (Grid ref TL163000) A414 between M10 and A1081, Hertfordshire (Grid ref TL150048) U, St Vincent Drive, Hertfordshire (Grid ref TL165061) A5183 between Park Street Lane and M10, Hertfordshire (Grid ref TL146045) M25 between J23 and J22, Hertfordshire (Grid ref TL217011) A1081 between A414 and A5183, Hertfordshire (Grid ref TL160061) U, Hall Gardens, Hertfordshire (Grid ref TL209057) C174, Colney Heath Lane, Hertfordshire (Grid ref TL180069)