...by which I mean that there are lots of numbers that are used for both an A road and a B road, and sometimes the identically numbered A road and the B road meet.
- A105 - B105 Stoke Newington map
- A1000 - B1000 Welwyn Garden City map
- A300 - B300 Southwark map
- A4289 - B4289 Swindon map
- A5284 - B5284 Kendal map
- A700 - B700 Edinburgh map
- A701 - B701 Edinburgh map