Well personally I would attach Lancashire and Yorkshire and all counties North of there to Scotland and call the whole thing The North and give it independence. I was born and raised in Lancashire and lived all of my adult life in Yorkshire. I honestly feel there is greater affinity with Edinburgh than there is with London in these areas.
I was not too long ago that Yorkshire had a bigger GDP than Scotland - let Scotland fend for themselves if they want to be totally independent of rest of UK..
If they do leave UK and rejoin EU their fishing waters will be a free for all and get ready for EU army recruiting offices popping up, and what shipbuilding they have left will be heading south, together with UK military bases.