The lack of toilets on Elizabeth line trains has been blamed for stranded passengers trying to force open doors. A report into trains being stranded for several hours near Paddington, west London , on 7 December last year found the absence of lavatories on Elizabeth line services was “a contributing factor to the passenger self-evacuation”. Damage to overhead power lines brought four Elizabeth line trains, two Heathrow Express trains and one Great Western Railway (GWR) service to a standstill.

The report by consultancy Steer for watchdog Transport Focus and regulator the Office of Rail and Road (ORR) stated: “GWR and Heathrow Express passengers had toilets and charging facilities on board that, at first, passengers could access during the incident. “The Elizabeth line, on the other hand, is not equipped with such facilities – which later appeared to be a contributing factor to the passenger self-evacuation.” There are no toilets on the Elizabeth line’s £1 billion fleet of trains despite some timetabled journeys lasting 75 minutes.

The report stated that while Heathrow Express and GWR passengers were frustrated, the general atmosphere in those carriages “remained friendly” and people “stayed patient and calmly listened to announcements”. It went on: “It was the opposite situation on the Elizabeth line, with no access to air conditioning, toilets, or charging facilities (and reduced lighting). “Some stranded passengers started misbehaving and violentl.