Phizzy - I presume you are also hoping for an exit from the EU to put right the evil perpetrated on the British peoples by the Roman legions?
Seriously though - Scotland and England and Wales and Ireland (now just NI) have collaborated much much more than they have fought and have changed the world immeasurably. To lose a union which has had such a powerful influence (for better or worse) on the world in pursuit of naked nationalism is to really misunderstand how much we gained from each other. Without English money and population size Scottish influence across the world, in history, becomes much less and vice versa, Scottish inventors, soldiers, innovators and hard workers made a huge contribution to the spread of western ideas and inventions under the Union Jack.
The union of 4 nations has been a beacon to the world for many years. Scotland alone or in the EU is a much dimmer light and the world is poorer for it.
England and Scotland should think about dissolving the union for good and making it a permanent single state. This division , stirred up by false nationalism, is an utter waste of something great and something that is unlikely to ever happen again. There are no people closer in blood, family and shared history than the Scots and the English/Welsh/Irish. Heck Ireland should consider creating the nation of Great Britain and get on with creating an outpost of law, fairness, education and enlightenment in this world of teetering institutions and war filled collapsing states.
If the EU is to become something similar to the UK it has a lot to do to change and there is nothing stopping the UK from rejoining at some future date. A reformed UK once broken is unlikely to ever happen again.