Brown Angus Butterfly

Did I see a Brown Angus in my garden a few days ago?  What I thought I saw was a brown butterfly with yellow spots.  I have looked at dozens of pics of both butterflies and moths since then, and the nearest both in identity and location would seem to be the Angus Brown.  I am not a lepidopterist (is that the right word?).  There is a blue that is similar (not true blue with with the blue tinge, but it was not that), but this was def. brown.  Sadly I did not see the underneath - or rather did not notice, perhaps - as it was there and gone in a couple of seconds.  But I had never seen one before, so tried to identify it.  This is not my picture, either, but it does give a clear identity of the Brown Angus.       

So, a bit of a mystery then, at Pine Tree Cottage!