List of A roads in zone 6 in Great Britain starting east of the A6 and A7 roads, and west of the A1 (road beginning with 6).
Previously allocated to a road from Luton to near Babraham. Became a portion of the A505 in 1935 when it was extended north to the A11; the section through Hitchin and Baldock is now the B656.
Later used for the Gateshead Western Bypass from Birtley to Blaydon. Became part of the A69 early on and then the A1 in the 1990s.[1]
Number also appears in the DfT Road lists from around 2002 as "Reserved for use for the Kirkumgate - Disforth proposals". Both place names do not exist with these spellings ("Kirkumgate" is probably an archaic spelling for Kirkhamgate and "Disforth" is a typo). The route is likely a descendant of the Kirkhamgate - Dishforth Motorway, a proposal to extend the M1 north between Leeds and Bradford, which later became the A6183, before being rerouted east of Leeds and becoming the M1 extension north of J43.
Later used as a provisional number along the Haslingden Bypass in east Lancashire. It was extended to meet the M65 at J8 in 1985 and was then renumbered as part of a rerouted A56.
Next used from Kegworth to West Bridgford, linking the M1 at J24 to Nottingham; a portion of the route was formally the B679. In 1978, the section west of the A614 was renumbered as a portion of a rerouted A453; the section to the east returned to the B679.