Mayor orders London Stadium investigation

London Stadium

"Deeply concerned" London mayor Sadiq Khan has ordered an investigation into a £50m increase in the cost of converting West Ham's London Stadium.

In 2015, former mayor Boris Johnson said the change from an Olympics arena to a football stadium would cost £272m, a figure which has now risen to £323m.

The investigation will look into inherited issues including the cost of moving the retractable seating.

A stadium expert has said the ground should be knocked down and rebuilt.