From Dishforth up to the northern edge of Tyneside, the A19 is a major route running east of the A1, serving all the large and important towns that its more famous counterpart doesn't reach.
There's almost no evidence of Liverpool's 1960's plans for an inner ring road on the ground - but the motorway that never materialised would have been astonishing. The full details on the route, and the missing part the M62, are here.