Surveyors have said the ceiling of the Apollo Theatre in London is “sound” after 80 people were injured, seven of them seriously, when sections of it collapsed on the audience during a packed show.

London Mayor Boris Johnson has said the West End is ‘open for business’ as a investigation continues into what caused a theatre ceiling to collapse, injuring 80 people.

Over 80 people have been injured, seven of them seriously, after part of the building collapsed in a London theatre tonight.

Up to 40 people are reported to have been injured, at least five of them seriously, after part of a balcony collapsed this evening during a performance in a London theatre.