A second independence referendum should have been blocked for half a century Donald Trump has claimed.

The business tycoon, who is running for the Republican Party’s presidential nomination in the USA said the UK Government should have demanded a clause that in the event of a no vote there could be no return to the question for 50 years.

He said it was “crazy” that Scotland could “go through all that again” in an interview with the Press and Journal newspaper.

He said “Cameron, or whoever was planning it… should have secured safeguards to prevent an early repeat.”

Mr Trump said he didn’t want to get involved in Scottish politics but people were repeatedly asking him for his opinion.

He said Scotland was better being “unified as opposed to being independent.”