King, Queen and Prince William will join Aberfan survivors to mark 60 years since a coal tip buried their school

Jeff Edwards was eight when rescuers spotted his blond hair in the rubble, making him the last child pulled alive, and he is among those due to speak. King Charles and Prince William will lay wreaths and Queen Camilla a posy at the memorial garden on the Pantglas Junior School site. William will also unveil a memorial tree at Ynysowen Community Primary School. Prime Minister Andy Burnham visited on Monday.

The tip had already sunk 20ft, but with no phones available a worker was forced on foot to alert bosses.

Burnham called it one of the 'most horrifying tragedies this country has ever seen'.