A dad who was travelling on a train to the Commonwealth Games in Birmingham has revealed how he went to the bathroom - and returned to find his son "chatting merrily" to the Duchess of Cambridge.
Kate was with Prince William and their middle child Princess Charlotte at the Games yesterday, where they took in sports including swimming, hockey and gymnastics.
And it appears Kate used public transport to get to the event being held in the Midlands - and she had an encounter with the father and son on the train.
