Unusual moth?

I found this on my window sill, I have no idea what sort it is, but sadly it was dead already UPDATE - it is a Box Tree Moth apparently. The caterpillars are highly destructive to Box trees/hedges. We dont have Box in our garden so its flown in from a neighbour I guess!

[Kathy]

Took a nosedive into the window perhaps? Lots of details of the coloration and the body.

[Dawn]

A nice details

[Shutterbug]

I like the details you have captured.

[Anne]

@randystreat @dawn @shutterbug49 Thank you! I guess you are right Kathy! Although moths do not live long anyway