- C, Aldenham Road, Hertfordshire (Grid ref TQ165965)
- A411 between A41(T) and A5183, Hertfordshire (Grid ref TQ170951)
- A41 between A5183 / A5 and A411, Hertfordshire (Grid ref TQ164950)
- A411 between A409 and A41(T), Hertfordshire (Grid ref TQ160950)
- A41 between A411 and B462, Hertfordshire (Grid ref TQ150959)
- M1 between LA boundary and J5, Hertfordshire (Grid ref TQ147961)
- A5183 between A41 and A411, Hertfordshire (Grid ref TQ176950)
- M1 between Harrow boundary and Harrow boundary, Harrow (Grid ref TQ169946)
- U, Ashdown Drive, Hertfordshire (Grid ref TQ185971)
- A409 between Hertfordshire boundary and A411, Hertfordshire (Grid ref TQ156945)
- U, Little Bushy Lane, Hertfordshire (Grid ref TQ142964)
- A41 between Hertfordshire boundary and A5183, Hertfordshire (Grid ref TQ175944)
- M1 between A41 and LA boundary, Barnet (Grid ref TQ175943)
- A411 between A4140 and A409, Hertfordshire (Grid ref TQ150946)
- U, Harcourt Road, Hertfordshire (Grid ref TQ140960)
- A5 between Harrow boundary and A41, Harrow (Grid ref TQ173942)
- U, Haggerston Road, Hertfordshire (Grid ref TQ183981)
- A41 between M1 spur and Barnet boundary, Barnet (Grid ref TQ176942)
- U, Barton Way, Hertfordshire (Grid ref TQ190972)
- A409 between A4140 and Harrow boundary, Harrow (Grid ref TQ154940)