THE head of the Civil Service in Scotland has been defended strongly by his UK counterpart, who has slapped down Opposition criticisms at Holyrood and Westminster.

Sir Gus O’Donnell, Cabinet Secretary and head of the UK Civil Service, has backed Sir Peter Housden, who came under ferocious attack by Holyrood opposition leaders and in the House of Lords this week.

Sir Gus has written to Iain Gray of Labour, Annabel Goldie of the Tories and the LibDems’ Willie Rennie to reject their criticism of Sir Peter.

The opposition leaders all wrote to Sir Gus after comments by Sir Peter on an internal Scottish Government website. Mr Gray said Sir Peter had adopted an “arrogant attitude” while Mr Rennie said he was disappointed by the “drift away from impartiality”.

Sir Peter had written in an in-house blog about constitutional issues: “It’s remarkable how the terms of this debate have changed irrevocably in just three weeks. Calman and the status quo now seem lost in the mists of time.”

This prompted the attacks from Holyrood Opposition leaders and others in the House of Lords this week, with Lord Foulkes for Labour calling for Sir Peter to resign and Lord Forsyth of the Conservatives joining in.

But Sir Gus made clear: “It is right and proper that civil servants working to their respective administrations undertake the relevant work to support their ministers to pursue their aims, whether or not these aims are the subject of political controversy.”

A Scottish Government spokesman said: “Sir Gus O’Donnell has made it absolutely clear civil servants in Scotland should support Scottish Ministers in developing policy on constitutional change and that to do so is entirely consistent with the Civil Service Code.”