Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom. Queen Elizabeth II, the Prince of Wales, Commonwealth Secretary-General Patricia Scotland and Prime Minister Theresa May at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom. Queen Elizabeth II, the Prince of Wales, Commonwealth Secretary-General Patricia Scotland and Prime Minister Theresa May at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom. Queen Elizabeth II, the Prince of Wales, Commonwealth Secretary-General Patricia Scotland and Prime Minister Theresa May at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom. Queen Elizabeth II, the Prince of Wales, Commonwealth Secretary-General Patricia Scotland and Prime Minister Theresa May at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom.British Prime Minister Theresa May at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom.British Prime Minister Theresa May at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom. Britain's Prince Charles speaks to Britain's Prime Minister Theresa May at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom. Britain's Prime Minister Theresa May and her husband Philip arriving at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom. Queen Elizabeth II greets Philip May( husband of UK Prime Minister Theresa May) at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images

Image licensed to i-Images Picture Agency. 19/04/2018. London, United Kingdom. Britain's Prime Minister Theresa May and her husband Philip arriving at a dinner at Buckingham Palace in London during the Commonwealth Heads of Government Meeting (CHOGM) Picture by ROTA / i-Images