Prince Charles arrived in Jordan last night for the start of a tour of the Middle East

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He added that it was "frightening" that young British Muslims were being radicalised by "crazy stuff on the internet".

"You would think the people who have come here, or are born here, and go to school here, would abide by those values and outlooks."

In an unprecedented outburst, he said: "The radicalisation of people in Britain is a great worry, and the extent to which this is happening is alarming, particularly in a country like ours where we hold values dear.

Telling British muslims that they should show more respect for "the values we hold dear," the Prince revealed that he was terrified by the influence of radical preachers who spread their teachings on the internet.

The heir to the throne railed against the radicalisation of young British men by Islamist extremists as he launched an impassioned defence of Britain's "Christian" heritage.

The Prince aired his forthright views on Islam and Christianity during an interview with BBC Radio 2

You would think the people who have come here, or are born here, and go to school here, would abide by those values and outlooks

The outspoken comments are a further sign that the Prince is not prepared to keep quiet on political causes close to his heart, despite assuming more and more responsibility from the Queen.

They came as he started a six-day tour of the Middle East in his mother's place, during which he has been urged to speak out against the barbaric practises of some Gulf states.

It is understood that the Prince will challenge new Saudi king Salman bin Abdulaziz al Saud over the terrible punishment handed down to blogger Raif Badawi when the pair meet face to face this week.

The free-speech champion was sentenced to a thousand lashes and ten years in jail after being convicted of insulting Islam over comments he made on his website which were critical of the autocratic Saudi regime.

Diplomatic sources close to the Saudi crown say there is much more chance the new king will listen to a fellow royal than to a foreign political leader.

Speaking to BBC Radio 2's The Sunday Hour ahead of touching down in Jordan last night, the Prince also called for an end to the persecution of Christians in the Middle East.

He told the show that if nothing was done, the time could soon come when "there are no Christians left in the Middle East," adding: "They are intimidated to a degree you can't believe."

During the forthright interview, he said: "The tragedy is even greater because Christians have been in the Middle East for 2,000 years, before Islam came in the 8th Century."