Queen Elizabeth II has apparently broken her silence over the Scotland Independence Referendum, telling the Scots to "think very carefully" about the consequence of their bid for independence on Thursday.

The 88-year-old monarch was coming from a Sunday morning service near her Balmoral estate in Scotland when she told a well-wisher that she hopes Scotland would think carefully about the future, reported the Times newspaper.

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The queen made the remarks after a well-wisher jokingly told her they would not mention the referendum.

A vote for independence on Thursday will see the split between Britain and Scotland. And while the queen has been assumed to support the union, she has refused to make public comments on the matter.

A source in Buckingham Palace told the Times that the queen is constitutionally impartial on Scotland's independence, citing that it was for the people of Scotland to decide.

The queen has consistently refused to endorse either side of the referendum debate. But her recent remark has been interpreted as boost to the pro-union campaign.

British Prime Minister David Cameron is in Scotland today to reinforce this point.

Last week, the prime minister along with Labour Party leader Ed Miliband and Deputy Prime Minister Nick Clegg skipped their weekly Q&A session in Westminster to appeal to the Scots to stay with the union.

Cameron's visit today will be his last attempt at impressing on the Scots the consequences of their irrevocable vote to split with Britain, the Guardian reported.

Buckingham Palace never comments on private exchanges made by the monarch, a spokeswoman told the Guardian. They just reiterate the queen's constitutional impartiality, the unnamed Buckingham official added.

Earlier in May, the queen expressed her hope that people of good will and faith will support Scotland's social good, whatever the outcome of the referendum would be.

Her latest remarks followed reports that she is horrified of UK breaking apart.

Elizabeth is said to remain as Scotland's queen even after the United Kingdom breaks apart. This, however, will not ensure the monarchy's future, the Guardian reported.

TagsScotland independence referendum, Scotland, United Kingdom, Queen Elizabeth II