- A1 between A1M and M25, Hertfordshire (Grid ref TQ223998)
- A1 between A1 and M25, Hertfordshire (Grid ref TQ224999)
- A1 between A5135 and A1M, Hertfordshire (Grid ref TQ220990)
- M25 between J23 and J22, Hertfordshire (Grid ref TL217011)
- M25 between J23 and J24, Hertfordshire (Grid ref TL249000)
- U, Denham Way, Hertfordshire (Grid ref TQ203978)
- A1081 between LA boundary and M25, Hertfordshire (Grid ref TQ240976)
- C, London Road, Hertfordshire (Grid ref TQ194999)
- B5378, Cowley Hill, Hertfordshire (Grid ref TQ197982)
- A1081 between Sunset View and Barnet boundary, Barnet (Grid ref TQ241974)
- A1000 between Kitts End Rd and Barnet boundary, Barnet (Grid ref TQ247980)
- U, Redwood Rise, Hertfordshire (Grid ref TQ195985)
- A1000 between A1081 and Kitts End Rd, Barnet (Grid ref TQ246974)
- A5135 between A1 and A5135 Newark Green roundabout, Barnet (Grid ref TQ211966)
- A5135 between A5135 Newark Green roundabout and A1, Barnet (Grid ref TQ212965)
- A1081 between A1000 and Sunset View, Barnet (Grid ref TQ243970)
- A1000 between LA boundary and Hill Rise, Potters Bar, Hertfordshire (Grid ref TL258000)
- U, The Campions, Hertfordshire (Grid ref TQ190982)
- A5135 between B5378 and Newark Green roundabout, Hertfordshire (Grid ref TQ200970)
- U, Kenilworth Drive, Hertfordshire (Grid ref TQ203965)