UPDATE

We uploaded a story this morning with the headline "Holyrood can hold referendum on 'whatever it likes', secret UK Government email says".

This was based on information published by another media outlet that has since been deleted – because that information is under an embargo until Tuesday, July 21.

We have thus removed the text of the article until the embargo has been lifted. You will be able to find the full story next week.

Thank you.

Your National team