- A312 between A4005 and A404, Harrow (Grid ref TQ147870)
- A4005 between A4127 and A312, Harrow (Grid ref TQ150868)
- A404 between A312 and B458, Harrow (Grid ref TQ153878)
- A404 between A312 and A4005, Harrow (Grid ref TQ149880)
- A312 between A4090 and A4005, Harrow (Grid ref TQ140860)
- C, The Ridgeway, Harrow (Grid ref TQ137877)
- A4127 between Harrow boundary and A4005, Harrow (Grid ref TQ156860)
- U, Grosvenor Avenue, Harrow (Grid ref TQ138881)
- A4127 between A4005 Harrow Rd and Harrow boundary, Harrow (Grid ref TQ158861)
- A4127 between Brent boundary and A404, Brent (Grid ref TQ160863)
- A4005 between A404 and A409, Harrow (Grid ref TQ155883)
- A404 between B458 and A409/A4006 roundabout, Harrow (Grid ref TQ160879)
- A404 between A4090 and A4005, Harrow (Grid ref TQ140884)
- A409 between A404 and A4005, Harrow (Grid ref TQ157883)
- A404 between A409 and A4127, Brent (Grid ref TQ164869)
- A4005 between A404 and A4127, Brent (Grid ref TQ160858)
- A4090 between A312 and A404, Harrow (Grid ref TQ132880)
- A4127 between A4090 and Ealing boundary, Ealing (Grid ref TQ154853)
- U, High Worple, Harrow (Grid ref TQ128874)
- U, Radnor Road, Harrow (Grid ref TQ150888)