The construction of the UK’s highest motorway, the M62, is recognised as a major engineering achievement, notably the section between Leeds and Manchester. Linking the two cities meant hacking through Saddleworth Moor and damming a reservoir to forge a route across the Pennine tops – a physical barrier that has well served those seeking to perpetuate the psychological Lancashire-Yorkshire divide.

But what of the legal centres of Leeds and Manchester? Is there still an intense rivalry that precludes cooperation between the Leeds and Manchester offices of the same firm more than a decade after Yorkshire began entering the Manchester market in force?