There's quite lot of stuff out there, but this is interesting . Pretty even handed I'd say:
The same group have written a number of papers on the topic over the years.
https://www.cardiff.ac.uk/__data/ass...ture_FINAL.pdf
It does highlight that there will be big challenges, but there are also ways to overcome them . Staying in a union that is only interested in investing in the south east of England is also a risk as highlighted in the report.
And at last it shows that all the talk of becoming a 3rd world country within a few years is really without foundation.