Nationwide school closures in UK over safety risks from crumbling concrete

Over 100 schools across the UK ordered to close buildings due to unsafe reinforced concrete that is at risk of collapse.
The affected buildings were constructed decades ago using reinforced autoclaved aerated concrete, which is now crumbling.
The government has faced criticism over delays in responding to longstanding warnings about the structural risks.
Most schools will remain open but may need to relocate classes to different buildings or temporary facilities.
Parents and officials have expressed frustration over disruptions as the new school year begins.