Used to run from Barton Seagrave to Harwich. Now superseded by the A14, A1307, A143, A1017, A1124, A133, B1352, and A120. The original route went from Barton Seagrave to Huntingdon. Historically, the Godmanchester to Colchester section was the original A132, and the Colchester to Harwich section was the original A135.
Ran as a loop off of the A1 along the former A1 via through Newark-upon-Trent (now B6325, A616, B6326). Before that, along Blackburn Road in Accrington from Abbey Street (then A680) to Broadway (then A679).
Ran from Gateshead to Blaydon (Now Ellison Road, Market Lane, and B6317/Hexham Road; also went east along A1114 and Derwentwater Road before the A184 was built).
Ran in Gateshead from the A184 to the A695 (now A189; originally went south along First Street and Elysium Street to the A692 before the A184 was built).
Ran in Gateshead from the A6081 to the A6082 (became part of the A184 when it was built).
Ran along Mulgrave Terrace from A6125/West Street to A692/Bensham Road in Gateshead. This became part of the A184 as parts were closed off; reused on the old route of the A184 along Askew Road, East Gate, Hawks Road, and Saltmeadow Road.
Ran as a road in Newcastle-upon-Tyne from A191 to A1 (now A194) (former A69 and A184; the A1 went southeast via current A19 and A194 at the time). When the western bypass was built and the A1 was rerouted over it, it became part of the A186 and A184. The original A6115 was in Welwyn from the A600 (High Street; this section of the A600 has since been removed) in Welwyn town centre to the A1 at the Clock Hotel (now Church Street and Roman Street).
Great Moor Street from A575 to Black Horse Street in Bolton (formerly part of the A579). The original A6172 went along Roff Avenue, Park Avenue, and Polehill Avenue in Bedford (it is unknown whether this was signed).
A section of old A617, renamed after designation of a new by-pass section using A617, both roads having junctions with the old A617 on Mansfield outskirts and with the old A617 on the outskirts of Rainworth village