Ever since prehistoric times – when Ug walked into a cave and said: “This, mine” – the human race has been obsessed with property.

It has become the ultimate store of value. Countless wars have been fought over its ownership. French philosopher Voltaire said: "The spirit of property doubles a man's strength." UK farmland has outshone gold, according to estate agent Knight Frank, following a 5,750% rise in its value over 50 years.