Mixed habitat - woodland fringe to limestone grassland
No interactions present.
The large palps held out sideways from the head, and the pointed shape at the end of their wings (caused by them folding over the tips of their forewings) make this a distinctive caddisfly genus.
This could be M. nigra or M. azurea. Hard to say how faithfully the colours are reproduced in the photo - azurea tends to have a steely-blue sheen to the wing whereas nigra is more of a jet black. I'd say this is nigra but it's hard to be certain.
A very good summary of the problems of identifying photos of Mystacides adults
Ian Wallace, UK Trichoptera Recording Scheme
Lat/Lng: 53.2545, -1.775
OS grid ref: SK151730