The British Social Attitudes poll attempts to discover the prevailing feelings in the UK on a number of topics, Scottish independence among them.
In its most recent incarnation, published on Thursday, 52 per cent of the 1,365 respondents supported independence becoming Scotland’s governing structure, up one percentage point since the last survey in 2019.
However, fieldwork for the survey was undertaken in September and October last year.
But the survey shows the shifting attitudes in Scotland through the years, with support for independence rising from 27 per cent in 1999 to 33 per cent in 2014 – in the weeks ahead of the referendum on Scottish independence – and eventually rising to 52 per cent last year.
The time series also showed a drop in support for devolution as the governing structure in Scotland, from 59 per cent in 1999 to 50 per cent in 2014 and a further drop to just 38 per cent last year.
Support for not having a Scottish Parliament has remained roughly at the same rate, falling from just 10 per cent in 1999 to 8 per cent last year, although the figure peaked at 17 per cent in 2004, the survey suggested.
The authors of the report, who included polling expert Professor Sir John Curtice, pointed to the 2014 referendum and Brexit as factors for the increase in support in the past decade.
They said: “Since 2014 there has been a marked increase in the level of support for independence, and especially so since the EU referendum of 2016, after which leaving the UK became more popular than devolution for the first time.
“Against this backdrop, it is perhaps not surprising that Scotland’s constitutional status should have become an issue of lively debate once more.
“The Union has certainly become decidedly less popular north of the border.”
A recent poll by Panelbase for The Sunday Times of 1,010 Scots found support for independence trailing the Union by 51 per cent to 49 per cent when undecided voters were removed.
SNP depute leader Keith Brown said Scotland becoming independent meant “never again will Scotland suffer the damage of Westminster Tory governments people here don’t vote for”.
He added: “Because of Westminster control over Scotland we are subject to a Tory party moving ever more to the right – apparently planning to scrap the cap on bankers’ bonuses while the vast majority of people take a hit to their living standards because of Brexit.
“Independent European countries similar to Scotland are wealthier and fairer than the UK, so why not Scotland?”
Scottish Tory constitution spokesman Donald Cameron accused the SNP and wider independence movement of attempting to polarise the country.
“A majority of Scots don’t want to be divided all over again and are instead looking for the SNP-Green Government to focus on their real priorities,” he added.
“Referendums by their very nature are divisive – it’s time for SNP ministers to start concentrating resources on the cost-of-living crisis and other major issues like the NHS, schools and the economy.”