LONDON - British Prime Minister David Cameron on Sunday ruled out giving Scotland another independence referendum despite spectacular gains by Scottish nationalists in a UK-wide election, saying Scots had "emphatically" rejected a breakaway only last year.

Cameron, who was re-elected with a surprise outright majority last week, said he would ensure that further powers would be granted to Scotland according to an existing plan. But he dismissed the idea that Scots might get another independence referendum anytime soon.

"We had a referendum. Scotland voted emphatically to stay in the United Kingdom," Cameron told Channel 4 News.

"There isn't going to be another referendum," he said, saying the pro-independence Scottish National Party (SNP), which won 56 of 59 parliamentary seats in Scotland last week, had made clear that election was not about securing another vote.

Scots rejected independence in September 2014 by 55-45 percent after a lengthy and divisive campaign. Some nationalists said afterwards that the question had been decided for "a generation."

But the startling success of the SNP, which all but wiped out the Labour Party in Scotland last week, has renewed speculation it might push for another referendum, perhaps in the run-up to a Scottish parliamentary election next year.