Tiny, Image heavily post-processed to highlight detail.
No interactions present.
I have added all the photos I took at the time to see if any bat experts can help.
My guide suggests juveniles are brown underneath and bats in this area observed in daylight are likely to be Daubenton's.
The post processing has artificially darkened the colouring as well. I will post one or two pictures as originally seen.
I can't see the tragus so can't be positive, but I can say this is not Daubentons (As adam says above, belly & feet are not right), and there is no post calcareal lobe, so is not a pipistrelle - also wings are not long enough for a noctule species, but I wouldn't like to say any more than just 'myotis'.
Lat/Lng: 56.1, -4.2
OS grid ref: NS6594