Epona
Radar 2006-2020, Sonic 2006-2022, Jakey 2007-2024
I spotted one of those the other day - doubtless hoping to lay eggs on the larvae of the bees - haven't managed to photograph one yet
If you've got tawny mining bees, they are the preferred host of the bee fly so you will doubtless see both around.
Bee flies are actually great pollinators of certain species of flowering plant so they aren't all bad and serve a good purpose.