Saudi Arabia remains one of Britain's closest allies worldwide

"The official title of the religious police is the Committee for the Promotion of Virtue and the Prevention of Vice. Chillingly, only two other movements in the world — the Taliban in Afghanistan and Islamic State in Syria and Iraq — have organisations with the same name. The Saudi government has always denied that it has any connection either with Islamic State or with Al Qaeda. Nevertheless, both jihadist organisations endorse the state religion which Saudi Arabia has spent an estimated $70 billion (£48 billion) exporting around the world."