Queen Elizabeth II

The Queen gave her consent

Greece to ask for NATO's support in the dispute with Turkey

He is likely to meet the Queen at Windsor Castle before heading to Scotland, having repeatedly said how much his Scottish mother admired Her Majesty

Mr Erdogan will have meetings with the Queen & Prime Minister Theresa May during his trip

Queen Elizabeth II & Prince Philip have visited almost 200 countries & all EU countries, except for one: Greece

The Duke of Edinburgh will retire in Autumn this year

May told MPs this week that invoking Article 50 will be a "defining moment" in Britain's history