A secrecy row around NHS Scotland’s handling of the Sandie Peggie case deepened last night as internal documents showed that spin doctors tried to water down what information could be released to the public.

Emails reveal that PR bosses wanted to withhold details in response to freedom of information (FOI) requests about the landmark ‘single-sex spaces’ tribunal.

They were reprimanded by an in-house lawyer who had to remind the health service of its legal duties.

It is the latest twist in a transparency battle between the Press, NHS Fife and NHS Scotland over how much the tribunal is costing the taxpayer.

The revelations also draw Scottish ministers closer to the secrecy scandal, given the chief executive of NHS Scotland, Caroline Lamb, is part of John Swinney’s government.