- A404 between A4145 and Hertfordshire boundary, Hertfordshire (Grid ref TQ070928)
- U, Astons Road, Hertfordshire (Grid ref TQ082925)
- A404 between Hillingdon boundary and A4180, Hillingdon (Grid ref TQ080919)
- A4145 between A404 and Chenies Way, Watford, Hertfordshire (Grid ref TQ077940)
- A404 between A412 and A4145, Hertfordshire (Grid ref TQ060940)
- A4180 between Northgate and A404, Hillingdon (Grid ref TQ082915)
- U, The Cloisters, Hertfordshire (Grid ref TQ061945)
- B469, Green Lane, Hillingdon (Grid ref TQ086914)
- A412 between A404 and A4178, Hertfordshire (Grid ref TQ060947)
- U, Sandy Lodge Way, Hillingdon (Grid ref TQ090920)
- U, The Fairway, Hertfordshire (Grid ref TQ092927)
- A412 between A404 Riverside Drive and A404 Chorleywoood Rd, Hertfordshire (Grid ref TQ056946)
- U, Uxbridge Road, Hertfordshire (Grid ref TQ050941)
- A412 between Long Lane and A404, Hertfordshire (Grid ref TQ050941)
- U, Newdigate Green, Hillingdon (Grid ref TQ055908)
- A404 between A4180 and A4125, Hillingdon (Grid ref TQ090909)
- U, The Mount, Hertfordshire (Grid ref TQ053949)
- U, Carew Road, Hillingdon (Grid ref TQ096916)
- A4180 between Reservoir Rd and Northgate, Hillingdon (Grid ref TQ078900)
- U, Windsor Way, Hertfordshire (Grid ref TQ044944)