- A412 between A40 and Buckinghamshire boundary, Buckinghamshire (Grid ref TQ036899)
- M25 between J16 and Buckinghamshire boundary, Buckinghamshire (Grid ref TQ020907)
- A412 between Hertfordshire boundary and A412 split, Hertfordshire (Grid ref TQ030917)
- U, Newdigate Green, Hillingdon (Grid ref TQ055908)
- C, Harvil Road, Hillingdon (Grid ref TQ057886)
- A413 between A40 and B416, Buckinghamshire (Grid ref TQ004900)
- A40 between A413 and A412, Buckinghamshire (Grid ref TQ027868)
- U, Lincoln Road, Buckinghamshire (Grid ref TQ004905)
- M25 between Hertfordshire boundary and J17, Hertfordshire (Grid ref TQ023929)
- U, Woodside Hill, Buckinghamshire (Grid ref TQ003903)
- U, Southlands Road, Buckinghamshire (Grid ref TQ039865)
- A40 between Fulmer Rd, Gerrards Cross and A413, Buckinghamshire (Grid ref TQ012873)
- U, Oval Way, Buckinghamshire (Grid ref TQ000891)
- A412 between A412 Denham Way and Long Lane, Hertfordshire (Grid ref TQ039935)
- A40 between A412 and M40 jn1/A412, Buckinghamshire (Grid ref TQ040863)
- U, Campion Close, Buckinghamshire (Grid ref TQ042862)
- A40 between B416 and Fulmer Rd, Buckinghamshire (Grid ref TQ000881)
- A413 between B416 and Cherry Acre, Chalfont, Buckinghamshire (Grid ref TQ000917)
- A412 between A412 Uxbridge Rd and M25, Hertfordshire (Grid ref TQ033939)
- A40 between Bulstrode Way and B416, Buckinghamshire (Grid ref SU997884)