Butterfly ID please
This morning there are lots of butterflies in the garden of a type that I've not seen before. Mostly orange, with fairly wide brown edges to both pairs of wings and a small "eye" on each upper wing. Won't sit still long enough for a picture. Gatekeeper or small heath look like the best possibilities according to my wildlife books, but neither is supposed to be common north of central England. Do you think the exceptionally hot weather after a long dry spell might have led to them coming further north than normal?
Doncaster, South Yorkshire. Soil type: sandy, well-drained