Overview

• Terminal 4’s check-in area was closed and evacuated as London Fire Brigade deployed specialist crews following a report of a possible hazardous materials incident.
• Emergency services later cleared the terminal to reopen and the fire brigade stood down its response.
• Paramedics assessed 21 people at the scene and transported one patient to hospital, with no life-threatening injuries reported.
• Metropolitan Police said a thorough search found no trace of any adverse substance and inquiries continue.
• National Rail earlier halted stops at Terminal 4, while Heathrow said other terminals operated normally and most flights continued as scheduled.