A group of parents whose children were killed in the Germanwings plane crash have released a scathing letter to Lufthansa’s chief executive, accusing him of ignoring their needs and feelings and insulting them with his company’s compensation offer.

The co-pilot of the doomed Germanwings flight repeatedly sped up the plane as he used the automatic pilot to descend the A320 into the Alps, the French air accident investigation agency said.

The French Alps plane disaster took a dramatic turn after black box recordings pointed to the co-pilot deliberately crashing the Airbus A320 into the mountains.

The families of three Britons killed in the French Alps plane disaster have spoken of their devastating loss.