- A1000 between A1001 and A414W, Hertfordshire (Grid ref TL230080)
- A1000 between A1000 split and A1M/B197 S, Hertfordshire (Grid ref TL233157)
- A1000 between A1000 split and A1M Jct 6/B656/B197, Hertfordshire (Grid ref TL234160)
- A1000 between Dixons Hill Rd and A1001, Hertfordshire (Grid ref TL235064)
- A1000 between A414 (midpoint) and A1000 Mill Green Lane, Hertfordshire (Grid ref TL239099)
- A1000 between A6129 and B195 W, Hertfordshire (Grid ref TL240121)
- A1000 between Bessemer Rd and A1000 split, Hertfordshire (Grid ref TL240154)
- A1000 between A1000 Mill Green Lane and A6129, Hertfordshire (Grid ref TL240101)
- A1000 between A1000 Mundells and A1000 Hertford Rd, Hertfordshire (Grid ref TL241150)
- A1000 between B195W and Ring Rd Jct S, Hertfordshire (Grid ref TL244133)
- A1000 between A411 and A1081, Barnet (Grid ref TQ245967)
- A1000 between A1081 and Kitts End Rd, Barnet (Grid ref TQ246974)
- A1000 between Kitts End Rd and Barnet boundary, Barnet (Grid ref TQ247980)
- A1000 between Ring Rd Jct S and Ring Rd Jct N, Hertfordshire (Grid ref TL248136)
- A1000 between inner ring road and inner ring road, Hertfordshire (Grid ref TL248135)
- A1000 between A110 and A411, Barnet (Grid ref TQ250961)
- A1000 between B158 and Dixons Hill Rd, Welham Green, Hertfordshire (Grid ref TL250055)
- A1000 between LA boundary and Hill Rise, Potters Bar, Hertfordshire (Grid ref TL258000)
- A1000 between B157 and B158, Hertfordshire (Grid ref TL259041)
- A1000 between Hill Rise and A111, Hertfordshire (Grid ref TL259007)
- A1000 between A111 and B156, Hertfordshire (Grid ref TL260009)
- A1000 between A109 and A110, Barnet (Grid ref TQ260950)
- A1000 between B156 and School Rd, Hertfordshire (Grid ref TL261020)
- A1000 between School Rd, Potters Bar and B157, Hertfordshire (Grid ref TL261030)
- A1000 between A598 and A109/A5109, Barnet (Grid ref TQ263930)
- A1000 between A1003 and A598, Barnet (Grid ref TQ264921)
- A1000 between A406 spur and A1003, Barnet (Grid ref TQ265910)
- A1000 between A406 spur and A406 spur, Barnet (Grid ref TQ266906)
- A1000 between A504 and A406 spur, Barnet (Grid ref TQ269900)
- A1000 between Barnet boundary and A504, Barnet (Grid ref TQ274889)
- A1000 between A1 and LA boundary, Haringey (Grid ref TQ276887)