London transport bosses said they had “done a great deal” to improve equipment and staff training since the 7/7 bombings as the inquest into the 52 deaths drew to a close.

Tube bosses said the installation of a new communications system allowing police and emergency services’ radios to work underground is a major advancement.

London’s transport commissioner, Peter Hendy, paid tribute to the staff on duty that day and said: “TfL staff responded in the best possible way, by getting our transport networks up and running as soon as possible…the bus network was up and running through central London and across the city later that same day and 85 per cent of the Tube network – with the exception of the bombed sections – the next morning.

“A great deal has already been done since July 7th to improve our equipment, capabilities and preparedness for such major incidents. This includes the installation of a multi-million pound new communications system…closer working with other agencies, enhanced staff training and improvements to the provision of medical supplies at stations.”

He added that the recommendations would be studied in detail.