malr
Your link shows a picture of POLECAT although I believe that the text is describing RQ-170. These are US programs.
B Word's picture is of BAeS TARANIS - a joint UK MoD/BAeS program that is ready to fly very soon. The technology was developed from their RAVEN program that flew in 2003. When they're so close to flying this, goodness knows why they are bothering with MANTIS and HERTi.
Here is RAVEN flying in Australia:
Hopefully, this has cured any incorrect notions.
Regards
LJ