UK Prime Minister David Cameron has criticized US Republican presidential front-runner Donald Trump for his "fundamental mistake" by blaming all Muslims for the "actions of a minority".

The Republican Party hopeful has on different occasions called for a total ban on all Muslims from entering America, suggested a database in the country to monitor followers of the religion and urged restrictions on them.

“I think the problem with what Donald Trump has said, and what some others say too, is they are making a fundamental mistake of trying to blame all of Islam and all Muslims for what is the ideology and the actions of a minority, and I think that's wrong. In many ways, it actually helps the extremists, because they want to create a clash of civilizations between Islam and Christianity, or Islam and the West,” British media reports said on Saturday.

Trump stirred controversy after the December 2 attack in San Bernardino, California, where a couple armed with rifles and handguns attacked a center for people with developmental disabilities, killing at least 14 people and wounding 17, the deadliest mass shooting in the United States in three years.

Now Cameron believes, “Actually, what's happening is not a clash of civilizations. It is a fight within Islam, where the overwhelming majority rightly see Islam as a religion of peace, and want to live in successful multiracial, multi-ethnic, multifaith democracies like ours, and make an incredible contribution to our country, as opposed to a small minority that believe this rhetoric of poisonous extremism, and many of this tiny minority then believing in violence.”

“So, what Donald Trump says is, in my view, not only wrong, but actually it makes the work we need to do to confront and defeat the extremists more difficult,” Cameron pointed out.

On Monday, the British Parliament opened a debate over a popular petition to ban the US Republican presidential candidate from entering Britain.

The petition that has been signed by over half a million people was prepared in the wake of his anti-Muslim remarks.

According to a new opinion poll in America, Trump has opened up a 30-point lead nationally over his rivals for the Republican nomination.

The billionaire businessman is trouncing his opponents with a 40.6 percent support, a Reuters-Ipsos tracking poll, released on Friday, has found.

Senator Cruz of Texas, his closest competitor, stood at 10.5 percent.