Iain Stewart, the Scotland Office minister, denied that Mr Johnson was “persona non grata” with the Scottish Tories on Monday and said it was not unusual for him not to meet Mr Ross when visiting the country.

“Douglas Ross and the Prime Minister are in regular contact,” he said. “I don’t know whether diaries didn’t line up.”

Kirsten Oswald, the SNP’s deputy Westminster leader, said: “It speaks volumes that this lame-duck Prime Minister spent most of his flying visit running scared of the people of Scotland – including his own Tory party colleagues, who are still calling for his resignation.

“People in Scotland are looking on in horror at the state of this arrogant, dishonest, out-of-touch Tory Government but we need more than just a change of Prime Minister.”