The Queen takes the view that the fate of Scotland - to stay in the union or leave - is in the hands of its people, a Buckingham Palace spokesman has said.

After reports over the weekend claimed the Queen was growing increasingly concerned about Scotland breaking away, a Palace spokesman stressed any suggestion the head of state wanted to influence the referendum vote was "categorically wrong".

There have also been calls from politicians for the Queen to make her views known in a bid to counter growing support for the independence campaign.

First Minister Alex Salmond has said he believes the Queen would be "proud'' to be "Queen of Scots''.

But the spokesman indicated that those in elected positions had a duty to help the monarch retain his or her position of political impartiality.

A Buckingham Palace spokesman said: "The sovereign's constitutional impartiality is an established principle of our democracy and one which the Queen has demonstrated throughout her reign.

"As such the monarch is above politics and those in political office have a duty to ensure this remains the case.

"Any suggestion that the Queen would wish to influence the outcome of the current referendum campaign is categorically wrong. Her Majesty is simply of the view this is a matter for the people of Scotland."

The spokesman's comments clarify the Queen's position for those who would try and draw her into the referendum debate.

The head of state is ultimately a unifying figure for the nation and if a sovereign was seen to favour one political party over another, or support a campaign, it would alienate a proportion of the population.

But there is a precedent for the Queen commenting on a major issue that has constitutional implications.

During her Jubilee year of 1977 there were growing calls for power to be devolved to Scotland and Wales.

The Queen made her views quite clear in a speech to both houses of Parliament when she said she understood the aspirations of Scotland and Wales: ''But I cannot forget that I was crowned Queen of the United Kingdom of Great Britain and Northern Ireland.

''Perhaps this Jubilee is a time to remind ourselves of the benefits which union has conferred, at home and in our international dealings, on the inhabitants of all parts of this United Kingdom.''