There have been more sightings of the B-2 Spirit aircraft this week, as they take part in exercises from an airfield in the UK.

Eastern Daily Press: William Clarke took this picture of a B-2 stealth bomber over Norwich Piture: William ClarkeWilliam Clarke took this picture of a B-2 stealth bomber over Norwich Piture: William Clarke (Image: Archant)

Three of the warplanes have been deployed to RAF Fairford, Glos, from where they have been flying training sorties.

They have included flights with F-35 Lightning jets from RAF Marham over the white cliffs of Dover.

The aircraft have also been joined by flying tankers from RAF Mildenhall, in Suffolk, which refuelled them during a sortie over the Norwegian Sea.

On Wednesday one of the aircraft was sighted over the outskirts of Norwich and near Ipswich, on an as-yet undisclosed mission.

Eastern Daily Press: A United States Air Force B2 Spirit with two RAF F-35 jets from Marham Picture: UK Ministry of Defence 2019A United States Air Force B2 Spirit with two RAF F-35 jets from Marham Picture: UK Ministry of Defence 2019 (Image: UK MOD © Crown copyright 2019 This image may be used for current news purposes only. It may not be used, reproduced or trans...)

The US Air Force has not yet revealed how long the aircraft will be based in the UK.

One senior officer said the deployment provided "an opportunity to train and integrate with our allies and partners in the region".