- U, Flaunden Lane, Hertfordshire (Grid ref TL023008)
- U, Horse Hill, Buckinghamshire (Grid ref TL004003)
- A404 between Church Grove, Little Chalfont and Buckinghamshire boundary, Buckinghamshire (Grid ref TQ010978)
- U, High Street, Hertfordshire (Grid ref TL013038)
- A404 between Hertfordshire boundary and road from North Hill, Hertfordshire (Grid ref TQ026975)
- B4505, Chesham Road, Buckinghamshire (Grid ref SP997034)
- M25 between J18 and J19, Hertfordshire (Grid ref TQ050980)
- A404 between A404 Woodside Rd roundabout and Church Grove, Little Chalfont, Buckinghamshire (Grid ref TQ000977)
- C74, Sarratt Road, Hertfordshire (Grid ref TQ051980)
- A404 between road from North Hill, Chorleywood and M25, Hertfordshire (Grid ref TQ033967)
- A41 between M25 JCT 20 and A414, Hertfordshire (Grid ref TL058031)
- U, Burtons Lane, Buckinghamshire (Grid ref SU996968)
- U, Blackettswood Drive, Hertfordshire (Grid ref TQ019960)
- C, Lower Road, Hertfordshire (Grid ref TQ026959)
- U, Coke's Lane, Buckinghamshire (Grid ref SU990967)
- M25 between J19 and J20, Hertfordshire (Grid ref TL074000)
- A4251 between Nash Mills Lane, Hemel Hempstead and Home Park Mill Link Rd, Kings Langley, Hertfordshire (Grid ref TL074020)
- A4251 between A41 and B4505, Hertfordshire (Grid ref TL034059)
- A4251 between Home Park Mill Link Rd, Kings Langley and M25 Jn20, Hertfordshire (Grid ref TL075017)
- A41 between A414 and A4251W, Hertfordshire (Grid ref TL030061)