David Cameron has explicitly denied he will resign as Prime Minister if Scotland votes for independence in September.
The Prime Minister answered "no" when asked if would quit Downing Street immediately upon a yes vote, insisting it was not his or any other name on the ballot paper on September 18.
Mr Cameron defended the decision to back a fair, legal and decisive referendum when the SNP was returned as a majority government in Holyrood in 2011.
Sources around the Prime Minister have previously said he would not quit amid claims earlier in the campaign his position could become untenable as the premier who lost the union.
Speaking to the BBC and asked directly if he would resign, Mr Cameron said: "No and I think it is very important people understand that because it is not my name or anyone else's name on the ballot paper.
"Of course, I want to see Scotland stay in the United Kingdom but I faced a choice in 2011 when the Scottish nationalists were elected to run the Scottish government. Do you have a referendum or do you have some massive fight with them saying 'no, no you can't possibly have this choice'?
"I thought the right thing to do, and this was backed by the other parties at the time, and I remain of the view it was the right thing to do, was to give the Scottish people a fair, legal and decisive referendum. That's what will happen.
"It was absolutely the right decision. You have to decide the prior question as it were - does Scotland want to stay in the United Kingdom or separate itself from the United Kingdom.
"Once you have settled that question, then you can properly engage with future acts of devolution - on which again I have a pretty good track record. We have a massive act of devolution coming through right now giving the Scottish Parliament far more power to spend money as it chooses."
A spokesman for First Minister Alex Salmond: "What Mr Cameron does the day after a Yes vote in September is entirely up to him and his party.
"In the meantime, he should step up to the plate and agree to a head to head debate with the First Minister, as he will find it very difficult to defend his position following a Yes vote if he has not come out to bat for his side.
"So far, the succession of day-tripping ministers the Prime Minister has dispatched north have succeeded only in rallying more and more people across Scotland behind the Yes campaign."