London: Prince Charles has warned rising populism across the world has "deeply disturbing echoes of the dark days of the 1930s".

Speaking in a four-minute radio segment recorded for the BBC's Thought for the Day, the first in line to the throne said it was "beyond all belief" that humanity had not learnt the lessons of the Holocaust.

He raised the plight of refugees and said their suffering did not end when they arrived in new countries.

"We are now seeing the rise of many populist groups across the world that are increasingly aggressive towards those who adhere to a minority faith," he said.