The story of the B555 is somewhat confused. As far as I can tell, it started off as the road from Radlett to Hatfield.

  • The B556 went from Dunstable to Ampthill.
  • Then the B556 was renumbered as the A5120.
  • And then the B555 was renumbered as the B556. But why?

UPDATE: This road is now part of the A1000.

(any dates for the changes ?)

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