- A3113 between M25 Jct 4 and A3044, Hillingdon (Grid ref TQ040754)
- A3113 between M25 Junction 4 and A3044, Hillingdon (Grid ref TQ040754)
- A3044 between A3113 and Spout Lane North, Hillingdon (Grid ref TQ048750)
- A3044 between Spout Lane North and A4, Hillingdon (Grid ref TQ046760)
- A3044 between Hillingdon boundary and A3113, Hillingdon (Grid ref TQ047748)
- A3044 between B378 Park Rd and Surrey boundary, Surrey (Grid ref TQ047745)
- M25 between J14 and Hillingdon boundary, Hillingdon (Grid ref TQ040766)
- M25 between J13 and J14, Surrey (Grid ref TQ030743)
- A3044 between A30/A308 and B378 Park Rd, Surrey (Grid ref TQ047740)
- C, Southern Perimeter Road, Hillingdon (Grid ref TQ054747)
- A4 between Sutton Lane, Colnbrook and Slough boundary, Slough (Grid ref TQ040771)
- A4 between Hillingdon boundary and A3044, Hillingdon (Grid ref TQ045771)
- A4 between A3044 and A3044, Hillingdon (Grid ref TQ050771)
- U, Vicarage Way, Slough (Grid ref TQ027771)
- U, Rayners Close, Slough (Grid ref TQ023770)
- A4 between A3044 and M4 spur road, Hillingdon (Grid ref TQ060769)
- M25 between J15 and Slough boundary, Slough (Grid ref TQ046782)
- M4 between J5 and J4B / M25, Slough (Grid ref TQ030781)
- U, Cranford Avenue, Surrey (Grid ref TQ064735)
- M4 between J4B / M25 and Slough boundary, Slough (Grid ref TQ047783)