Scotland's First Minister Nicola Sturgeon makes a statement on an independence referendum at the Scottish Parliament, in Edinburgh
Scotland's First Minister Nicola Sturgeon makes a statement on an independence referendum at the Scottish Parliament in Edinburgh, Scotland, Britain June 28, 2022.

Scotland's First Minister Nicola Sturgeon announced plans on Tuesday for a second referendum to be held on Scottish independence in October next year, vowing to take legal action to ensure a vote if the British government tried to block it.

Sturgeon said the Scottish government, which is led by her pro-independence Scottish National Party, would publish a referendum bill later, outlining plans for the secession vote to take place on Oct. 19, 2023.

She also said she would be writing to British Prime Minister Boris Johnson for permission to hold a consultative referendum, but had already set in motion plans to get the legal authority should he block the plans.

"What I am not willing to do, what I will never do, is allow Scottish democracy to be a prisoner of Boris Johnson or any prime minister," Sturgeon told lawmakers in the devolved Scottish Parliament.

Voters in Scotland, which has a population of around 5.5 million, rejected independence in 2014. But Scotland's semi-autonomous government says Britain's departure from the EU, which was opposed by a majority of Scots, means the question must be put to a second vote.

Johnson and his ruling Conservative Party, which is in opposition in Scotland, strongly oppose a referendum, saying the issue was settled in 2014 when Scots voted against independence by 55% to 45%.

He has previously refused to issue a "Section 30" order, which gives authority to the Scottish parliament to hold a referendum.

Sturgeon said that the legality of a referendum without such an order from the UK government was contested, and so she had already asked the Lord Advocate, the senior Scottish Law Officer, to refer the question to the UK's Supreme Court.

If the court found the Scottish parliament could not hold an independence referendum without the prime minister's consent, Sturgeon said the SNP would instead contest the next UK election on a platform of whether Scotland should be independent.

Scotland's First Minister Sturgeon holds news conference on proposed second referendum on Scottish independence, in Edinburgh
Scotland’s First Minister Nicola Sturgeon speaks at a news conference on a proposed second referendum on Scottish independence, at Bute House in Edinburgh, Scotland, June 14, 2022.