SCOTTISH government “transgressions” at meetings with foreign ministers resulted in the UK taking a tougher stance over international discussions, Alister Jack told MPs.

The Scottish Secretary insisted his UK government colleague, Foreign Secretary James Cleverly, was “right” to take a firmer line.

Cleverly last month wrote to UK officials, instructing them to take a “strengthened approach” to visits involving Scottish ministers and overseas governments, urging them to ensure Westminster representatives were also present for any talks.

But the move angered Scottish External Affairs Secretary Angus Robertson, who accused the Foreign Secretary of making “misleading” statements as he called for the guidance to be withdrawn.

READ MORE: UK Government ‘showing disrespect’ after diplomats' Scotland row

Robertson also wrote to Cleverly, raising concerns that it could damage “Scottish trade, cultural exchanges and education and Scottish interests in general”.

With Scottish Affairs Committee chair Pete Wishart suggesting at a meeting on Monday that the guidelines “seemed to be provocative”, Jack said he “absolutely approved of the content of the letter”.

Jack claimed in meetings with foreign administrations, Scottish government representxatives had been “straying into territories of the constitution and foreign affairs” by talking about matters such as Brexit and Scottish independence – noting these areas are under the control of Westminster.

“We don’t think that our high commissions, our embassies, our consulates should be used for that purpose,” Jack insisted.

He told MPs: “We believe the United Kingdom infrastructure should be used for the Scottish government to promote trade and culture and other things we have agreed, the devolved areas we have no problem.

“But once you go into the reserved areas and start talking to those, we take exception to it.”

The Scottish Secretary insisted to the committee: “The new guidelines do not as claimed hinder the Scottish government’s abilities to engage overseas.”

Hitting out at Robertson, the Scottish Secretary however said the guidance “didn’t go down very well with old Air Miles Angus for a very good reason – that is because he took offence at us calling him out visiting governments and talking to them about matters we know are reserved, the constitution and foreign affairs”.

Jack said an “indication” had been given to the Scottish government in November that such behaviour “needed to stop”.

But he told the committee: “It was ignored, and it actually got worse.

“There were five of six other examples actually brought to light to the Secretary of State, of transgressions of what we thought was the right position, and that was when the letter went.

“I feel it was the right letter, I saw the letter, absolutely approved of the content of the letter… because I think it is wrong for us to facilitate using our embassies and high commissions for members of devolved administrations to then go and meet foreign government ministers and undermine our foreign policy which is what they were doing.”

Despite his comments, Jack insisted his assessment of how the Scottish and UK governments were working together was “a very positive one”.

Wishart told him: “I don’t think intergovernmental relations have ever been at such a low ebb between the UK and Scottish governments.

“They seem to be characterised by mistrust, never ending conflict, and a sense of diktat.”