18. Ingvar Kamprad and family: Net worth — £28 billion ($36.34 billion)
The Swedish business magnate has been at the helm of IKEA, one of the world's largest furniture stores and most beloved brands, for more than 70 years.
The Swedish business magnate has been at the helm of IKEA, one of the world's largest furniture stores and most beloved brands, for more than 70 years.