oaw - spotted

Butterfly struggling to escape from a window. I tried to arrange a "capture and release" exercise but the business owner was extremely un-helpful, I left without achieving anything but upsetting myself.
We have not been back to this establishment since, despite visiting the locality regularly !

Almost certain that this butterfly is an example of a Marbled white [Melanargia galathea]

The poor thing will have died there, even if the "Nasty Man" didn't swat it or spray fly-killer about ...