The Olympic Delivery Authority has suspended all work involving open flames or high temperatures on Olympic sites after last week’s warehouse fire.

The ODA, which is reviewing its health and safety procedures, said the fire had been caused by insulation material that had ignited during demolition work while an oxyacetylene torch was being used.

Meanwhile, it emerged this week that the aquatics centre designed by Zaha Hadid could have temporary seating at both ends. Work-in-progress designs show grandstands on either side of the roof.

An ODA spokesperson said it was looking at options for temporary seating but added that a final design was still being worked on.