- U, Newdigate Green, Hillingdon (Grid ref TQ055908)
- A412 between A40 and Buckinghamshire boundary, Buckinghamshire (Grid ref TQ036899)
- C, Harvil Road, Hillingdon (Grid ref TQ057886)
- A4180 between Reservoir Rd and Northgate, Hillingdon (Grid ref TQ078900)
- A404 between A4145 and Hertfordshire boundary, Hertfordshire (Grid ref TQ070928)
- A412 between Hertfordshire boundary and A412 split, Hertfordshire (Grid ref TQ030917)
- A404 between Hillingdon boundary and A4180, Hillingdon (Grid ref TQ080919)
- A4180 between Northgate and A404, Hillingdon (Grid ref TQ082915)
- A412 between A412 Denham Way and Long Lane, Hertfordshire (Grid ref TQ039935)
- U, Astons Road, Hertfordshire (Grid ref TQ082925)
- B469, Green Lane, Hillingdon (Grid ref TQ086914)
- A404 between A412 and A4145, Hertfordshire (Grid ref TQ060940)
- A412 between Long Lane and A404, Hertfordshire (Grid ref TQ050941)
- U, Uxbridge Road, Hertfordshire (Grid ref TQ050941)
- A404 between A4180 and A4125, Hillingdon (Grid ref TQ090909)
- M25 between J16 and Buckinghamshire boundary, Buckinghamshire (Grid ref TQ020907)
- U, Reservoir Road, Buckinghamshire (Grid ref TQ085890)
- U, Windsor Way, Hertfordshire (Grid ref TQ044944)
- U, Sandy Lodge Way, Hillingdon (Grid ref TQ090920)
- M25 between Hertfordshire boundary and J17, Hertfordshire (Grid ref TQ023929)