Who is the worlds wealthiest person?

He was placed as second-wealthiest person in the UK in the Sunday Times Rich List 2006, with an estimated fortune of £10,800 million. Abramovich qualified for the list by virtue of retaining residences in London and Sussex. His 440-acre estate in West Sussex was previously owned by King Hussein of Jordan. It has stabling for 100 horses, two polo pitches, a swimming pool, a clay pigeon shoot, a rifle range and a go-kart track.