Article 50 triggered: Formal Brexit process begins

The Prime Minister has triggered Article 50 after her letter to European Council President Donald Tusk was delivered by Ambassador Sir Tim Barrow in Brussels.Mr Tusk immediately responded on Twitter: "After nine months the UK has delivered.Kicking off the two-year process of withdrawal from the European Union, Theresa May told MPs: "This is a historic moment from which there can be no turning back.