I agree with BigChocFrenzy about Maggie: she then went on to build her "success" on the back of North Sea Oil, used it to find tax cuts, crush the unions while destroying the UK manufacturing industry, building the financial sector in the South East (unbalancing the entire UK economy) and not using any of it to build infrastructure that benefitted the whole of the UK 
Contrast that with Norway which went from being a poor Nordic country with just fishing as an industry to having the largest sovereign wealth fund in the world as a result of its (smaller) gas and oil fields 
- in preparation for when the oil runs out.
I didn't buy into the "It's Scotland's oil" mantra which started in the 70s (had arguments with friends about that very topic when I went to Uni in 78) but having seen how its benefit was squandered, I have reconsidered 
. Shame most of it has gone now - so not so much left with which to build an Oil Fund (although that was the plan in Scotland's Future - the White Paper written in advance of the Indyref strange concept 
)
Having said that, Maggie can't be blamed for all the squandering. There have been nearly 30 years since she stood down for other PMs (of both parties) to change their approach.
So it's not surprising that I have no confidence that the WM tiger, in the post Brexit chaos, will change its spots
Look at everything they haven't done to support the "Northern Powerhouse"
Look at how long it will take HS2 to be built, let alone HS3, let alone HS routes into Scotland . Look at how the Channel Tunnel was built as National Infrastructure on the basis that there would be direct links from Scotland, which were then shelved Look at the lack of decent transport links between North and South Wales Look at the lack of decent transport links into Cornwall and the South West