Breath easy, that was unlikely to have been Mr Murder. The yellow-legged hornets look similar. It was probably a large one of those. There have been no sightings in the UK yet. Well, Guernsey, apparently. But not sure if I can believe the Daily Express.
The Praying Mantis team now bring on their substitute.. *Contain scenes of violence that some hornets may find upsetting*
https://www.youtube.com/watch?v=xvPk7EXxdUE
Praying Mantis. They take no shit from this pretender.
There is a video in YouTube of a stand-off in which the Praying Mantis grabs the hornet and then slowly eats it face first.
I don't normally watch such gory horror but it was rather compelling.