The chairman of a French conservative think tank says that “Islam stands a very good chance to simply conquer… this country.”

Michel Gurfinkiel of the Jean-Jacques Rousseau Institute claims that massive Muslim immigration and poor integration mean that Islam is already “transforming the fabric of French society”. Surveys indicate that 10-15 per cent of the French population is now of Muslim origin, which rises to 20-30 per cent among under-25s.

In addition, he says, radical Islam is growing in acceptance, but even moderate Muslims tend “to think of themselves as a new nation” which they hope will supersede “the present Judeo-Christian nation”.

Meanwhile, Catholicism is declining and the birth rate is dropping among the native French.