I provided a cite as per forum rules.
Labour returned to power in a landslide electoral victory in May 1997. A second Scottish devolution referendum was held later that year, as promised in the Labour election manifesto.[6] Clear majorities expressed support for both a devolved Scottish Parliament (74.3% in favour) and that Parliament having the power to vary the basic rate of income tax (63.5% in favour).[6] The Scotland Act 1998 established the new Scottish Parliament, first elected on 6 May 1999,[7] with power to legislate on unreserved matters within Scotland.
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In January 2012, the UK government offered to legislate to provide the Scottish Parliament with the powers to hold a referendum, providing it was "fair, legal and decisive".
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Negotiations continued between the two governments until October 2012, when the Edinburgh Agreement was reached.
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In January 2012, Labour MSP Elaine Murray led a debate arguing that the franchise should be extended to Scots living outside Scotland, including the approximately 800,000 living in the other parts of the UK.[38] This was opposed by the Scottish government, which argued that it would greatly increase the complexity of the referendum and stated that there was evidence from the United Nations Human Rights Committee that other nations "might question the legitimacy of a referendum if the franchise is not territorial"
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In the House of Lords, Baroness Symons argued that the rest of the UK should be allowed to vote on Scottish independence, on the grounds that it would affect the whole country. This argument was rejected by the UK government, as the Advocate General for Scotland Lord Wallace said that "whether or not Scotland should leave the United Kingdom is a matter for Scotland".[38] Wallace also pointed to the fact that only two of 11 referendums since 1973 had been across all of the United Kingdom.[38] Professor John Curtice cited the precedent of the Northern Ireland sovereignty referendum of 1973 (the "border poll"), which allowed only those resident in a part of the UK to vote on its sovereignty
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The Scottish Independence Referendum Act 2013 set out the arrangements for the referendum and was passed by the Scottish Parliament in November 2013, following an agreement between the devolved Scottish government and the Government of the United Kingdom.
https://en.wikipedia.org/wiki/2014_Scottish_independence_referendumThe UK parliament collaborated and discussed every aspect of the referendum from first to last.
Allow me to reiterate ...
"You are wrong that it was the Scottish Government which prevented ex-pats from voting in the referendum.
The UK government also vetoed the proposal."
