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U, Redwood Rise, Hertfordshire (Grid ref TQ195985) B5378, Cowley Hill, Hertfordshire (Grid ref TQ197982) U, The Campions, Hertfordshire (Grid ref TQ190982) U, Denham Way, Hertfordshire (Grid ref TQ203978) U, Haggerston Road, Hertfordshire (Grid ref TQ183981) U, Barton Way, Hertfordshire (Grid ref TQ190972) C, London Road, Hertfordshire (Grid ref TQ194999) A5135 between B5378 and Newark Green roundabout, Hertfordshire (Grid ref TQ200970) U, Ashdown Drive, Hertfordshire (Grid ref TQ185971) U, Kenilworth Drive, Hertfordshire (Grid ref TQ203965) A5135 between A1 and A5135 Newark Green roundabout, Barnet (Grid ref TQ211966) A1 between A5135 and A1M, Hertfordshire (Grid ref TQ220990) A5135 between A5135 Newark Green roundabout and A1, Barnet (Grid ref TQ212965) U, Newberries Avenue, Hertfordshire (Grid ref TQ171996) U, Williams Way, Hertfordshire (Grid ref TQ169999) A1 between A411 Barnet Road and A5135 Elstree Way, Barnet (Grid ref TQ211960) A411 between A5183 and A1(T), Hertfordshire (Grid ref TQ200954) A1 between A1M and M25, Hertfordshire (Grid ref TQ223998) A1 between A1 and M25, Hertfordshire (Grid ref TQ224999) M25 between J23 and J22, Hertfordshire (Grid ref TL217011)