In fact it took another 30 years before the first chink in their armour started to appear. This came unexpectedly on 13 January 1997 when, in reply to a series of questions put by SNP Leader in the Commons, Alex Salmond MP to the then Tory government, Treasury Minister William Waldegrave admitted that Scotland had paid a massive £27 billion more to the London Exchequer than it had received since the Tories came to power in 1979. Statistically this works out at £5,400 for every Scot.
That might sound a lot but it's only 300 pounds per capita per year.
It's no surprise that Scotland provides a surplus with oil.