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C77, Hill Farm Avenue, Hertfordshire (Grid ref TL101009) A405 between A41 and A412, Hertfordshire (Grid ref TL110004) A41, Abbots Langley, Hertfordshire (Grid ref TQ094999) A41, Hertfordshire (Grid ref TQ095996) A41 between A412 and A405, Hertfordshire (Grid ref TQ100995) A41, Hertfordshire (Grid ref TQ094996) C, Sheepcot Lane, Hertfordshire (Grid ref TQ111999) A41, Hertfordshire (Grid ref TQ092996) U, Hazelwood Lane, Hertfordshire (Grid ref TL085011) U, Lauderdale Road, Hertfordshire (Grid ref TL084008) A412 between A41(T) and A405(T), Hertfordshire (Grid ref TL114000) A405 between A412 and M1, Hertfordshire (Grid ref TL117010) U, Hazelbury Avenue, Hertfordshire (Grid ref TL084013) A41 between A411 / M25 J19 SPUR and A405, Hertfordshire (Grid ref TQ090995) A41, Hertfordshire (Grid ref TQ090995) U, Gallows Hill, Hertfordshire (Grid ref TL082014) A41 between A417 / M25 JCT 19 SPUR and M25 JCT 20, Hertfordshire (Grid ref TL083000) U, Courtlands Drive, Hertfordshire (Grid ref TQ093990) M25 between J20 and J21, Hertfordshire (Grid ref TL100029) U, Garston Lane, Hertfordshire (Grid ref TL120000)