Prince Charles may have been magnanimous in Rwanda last week towards Commonwealth countries considering severing ties with the British royal family, but the same largesse would not extend to Scotland should its separatists bash on with their bid to break up Britain.

For while Nicola Sturgeon and her predecessor, Alex Salmond, have enjoyed cosying up to the Queen, SNP activists are mostly republicans and many in the party want to hold a vote on keeping the monarchy should Scotland secede from the UK.