London mayor Sadiq Khan has ordered an investigation into the rising bill for converting the London Stadium for use by West Ham amid concerns that taxpayers will be saddled with the costs for years to come.
The Premier League club moved to the centrepiece of the London Olympics this season but it has not been a smooth transition with several incidents of crowd trouble and complaints about a lack of atmosphere.
But Khan, who replaced Boris Johnson as mayor in May, is more concerned about a £51 million hike in the cost of transforming the stadium from its Olympic configuration into a 60,000-seat multi-purpose venue fit for top-flight football.