Scotland’s First Minister Humza Yousaf has cancelled a speech he was due to give in Glasgow this lunchtime as he fights for his political life.

The event at Strathclyde University, where the SNP leader was also due to take part in a question and answer session and take questions from the press, was scratched with just a few hours notice.

The move will fuel speculation over his future, particularly after sources said Mr Yousaf would “come out fighting” after his former allies in government, the Scottish Greens, said they would join the other opposition parties in a vote of no confidence next week.

Scotland’s first minister battling to save job – follow live

The crisis was triggered after Mr Yousaf dramatically brought the powersharing deal with the Greens to an end on Thursday, following tensions over the SNP’s climbdown on climate targets and the decision to pause the prescription of new puberty blockers at Scotland’s only gender clinic.

The ditching of the deal means the SNP will now operate as a minority administration at Holyrood.

The Greens joining forces with the other opposition parties, means Mr Yousaf faces a knife-edge vote that ranges 64 out of 128 MSPs against him.

The SNP have 63 MSPs at Holyrood while there is also Ash Regan, a former SNP minister who defected to Alex Salmond’s Alba Party, who has not yet confirmed which way she will vote.

Her support could be crucial in getting the embattled first minister over the line.

Presiding officer Alison Johnstone can cast tie-breaking votes but would be expected to vote in favour of the status quo.

In the light of her pivotal role, Ms Regan has written to Mr Yousaf to argue that Scotland “deserves and demands a reset”.

She said her priorities were Scottish independence, “the dignity, safety and rights of women and children” and providing competent government.

She also said her “door is open” to discuss a proposed bill on holding a referendum on whether the Scottish Parliament should have the powers to hold another independence vote.

Any vote is likely to take place next week, with timings to be confirmed by parliamentary authorities.

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