- A120 between A10(T) and A1184 / A250, Hertfordshire (Grid ref TL450224)
- A120 between A1184 / A250 and Hertfordshire boundary, Hertfordshire (Grid ref TL480230)
- A120 between Essex boundary and B1383, Essex (Grid ref TL499231)
- A120 between B1383 and A1250, Essex (Grid ref TL510217)
- A120 between A1250 and M11 JCT 8, Essex (Grid ref TL513216)
- A120 between M11 Junction 8 and A120, Essex (Grid ref TL518217)
- A120 between M11 Jct 8 and A120, Essex (Grid ref TL532217)
- A120 between M11 Junction 8 and A120, Essex (Grid ref TL536217)
- A120 between A120 and A120, Essex (Grid ref TL575223)
- A120 between M11 Jct 8 and A130, Essex (Grid ref TL610217)
- A120 between B1256 and A130, Essex (Grid ref TL617212)
- A120 between A130 and A131, Essex (Grid ref TL650222)
- A120 between A130 and A131, Essex (Grid ref TL653219)
- A120 between A131 and B1256, Essex (Grid ref TL780228)
- A120 between B1256 and B1024, Essex (Grid ref TL818228)
- A120 between B1024 and A12, Essex (Grid ref TL900234)
- A120 between A12 and A1232, Essex (Grid ref TM015291)
- A120 between A1232 and A133, Essex (Grid ref TM033278)
- A120 between A133 and B1035, Essex (Grid ref TM116269)
- A120 between B1035 and B1352, Essex (Grid ref TM181292)
- A120 between B1352 and A136, Essex (Grid ref TM214304)
- A120 between A136 and Harwich, Essex (Grid ref TM243318)