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A1000 between B157 and B158, Hertfordshire (Grid ref TL259041) U, Swanley Bar Lane, Hertfordshire (Grid ref TL261031) A1000 between School Rd, Potters Bar and B157, Hertfordshire (Grid ref TL261030) C, Blue Bridge Road, Hertfordshire (Grid ref TL244033) A1000 between B158 and Dixons Hill Rd, Welham Green, Hertfordshire (Grid ref TL250055) U, Station Road, Hertfordshire (Grid ref TL240042) A1000 between B156 and School Rd, Hertfordshire (Grid ref TL261020) U, Chace Avenue, Hertfordshire (Grid ref TL266013) B158, Cumcum Hill, Hertfordshire (Grid ref TL271069) A1000 between A111 and B156, Hertfordshire (Grid ref TL260009) A1000 between Dixons Hill Rd and A1001, Hertfordshire (Grid ref TL235064) A1000 between Hill Rise and A111, Hertfordshire (Grid ref TL259007) A111 between Hill Rise and A1000, Hertfordshire (Grid ref TL262006) A1 between J1 and J2, Hertfordshire (Grid ref TL223050) A111 between M25 and Hill Rise, Hertfordshire (Grid ref TL263004) M25 between J24 and Hertfordshire boundary, Hertfordshire (Grid ref TL269003) A1005 between Hertfordshire boundary and M25, Hertfordshire (Grid ref TL268001) A1000 between LA boundary and Hill Rise, Potters Bar, Hertfordshire (Grid ref TL258000) M25 between J23 and J24, Hertfordshire (Grid ref TL249000) A111 between Hertfordshire boundary and M25, Hertfordshire (Grid ref TQ267998)