The telecoms giant - which acquired EE in 2016 - has vowed to provide "critical, trusted communications" for the Emergency Services after EE’s original mobile services ESN agreement with the Home Office was due to expire at the end of this year.

ESN is "a national critical communications system that enables fast, safe and secure mission-critical voice, video and data across the 4G network and gives first responders immediate access to life-saving data, images and information in live situations and emergencies on the frontline."

It replaced the outdated Airwave system.

Bas Burger, CEO of Business at BT, said: “BT Group has been a committed longstanding partner for Britain’s Emergency Services Network (ESN). We’re proud to double down on this commitment today by broadening the scope of our agreement with the Home Office until 2032 and beyond – as the Government takes ESN from build through to delivery and operation of this critical network.

“Essential public services like these depend on a rock-solid digital foundation. Through our award-winning EE mobile network, we’ll continue to play a central part in delivering mission- critical, trusted communications for the Emergency Services on the ground, in the air, and wherever they need to operate – helping them connect for good and protect the communities they serve nationwide.”