THERESA May appeared to say Scotland’s No vote in 2014 means whisky made in Scotland should be labelled as British rather than Scottish.

The Prime Minister was responding to a question from Ochil and South Perthshire Tory MP Luke Graham, who asked his party leader about reports the Scottish Government had challenged Marks and Spencer after the retail giant labelled Scotch whisky as British.

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That followed a story in The National last year pointing out that while the high quality retailer happily labelled drinks made in England as English, booze made north of the border was only ever British.

Graham asked the PM if she shared his “surprise” that the "SNP administration had bullied Marks and Spencer over the use of the word British and the union flag on British produce.

"Will she stand with me against this petty bullying and support companies that are proud of Scottish and British produce?" he added.

May said she absolutely agreed.

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"We should all be proud of Scottish and British produce, of produce of any part of our United Kingdom.

"I think it is frankly appalling that the Scottish Government did not want to see the Union flag and the word British on produce.

"And it's not only appalling it failed to reflect the vote that took place in Scotland, that showed that people in Scotland wanted to remain part of the UK."

Last November, the retail giant backed down in a “Union Jackery” row that saw whisky labelled as British.

The store was initially taken to task by The National after reader Stewart Brown contacted us to point out a mistake on the firm’s website.

On the whisky and gin pages in the food section of the website, M&S had listed the countries of origin as US, Ireland, India, England and Great Britain.

Brown complained: “If Scotland only merits a listing under ‘Great Britain’, why does England not similarly fall within this ‘Great Britain’ category? Who on earth refers to whisky from Great Britain, or to British whisky, when in fact the origin is Scotland and the spirit Scotch? Moreover, in terms of listing countries of origin, in any context England has exactly the same status as Scotland.”

Brown was later told in an e-mail by a customer services operative: “At the moment, it looks like our customers are happy with how the Whisky is currently categorised.”

But now, documents released to the Tories under FOI show that after our story was published, sparking outrage, Rural Affairs Secretary Fergus Ewing went straight to the top of M&S.

He was told by civil servants: “Scottish Government officials spoke to M&S to seek clarity on the situation with regard to the status of these products on their website. M&S urgently investigated this and reverted back confirming that this was indeed an error which they immediately rectified and sent out a tweet apologising for their error.”

In an email, M&S told the government official: “After speaking to colleagues in our Food team I can confirm that the website listing issue regarding whisky and gin products from Scotland, as reported in the National newspaper, was an unfortunate mistake and has now been rectified online.

“I hope this note helpfully clarifies the situation and enables you to brief Ministers that M&S is fully committed to sourcing Scottish produce and labelling products as from Scotland both on pack and on our website wherever possible."