Acting like a hoverfly - spending much time on a sunny piece of cloth in grassland and making sorties (with whirring wings) - but never seen feeding.
No interactions present.
Thanks for the ID - sorry I could not provide better pictures but it was very wary and would not allow me to get close (several attempts over two days).
Alan Brampton (Benson)
Lat/Lng: 51.6262, -1.105
OS grid ref: SU620923