Fritillary Butterfly?

Got one, at last!
I have commented a few times recently on fellow blipper’s posts, that I do not see many butterflies or moths. Today, up at Mugdock, I kept my eyes very focused on the grassland areas and was happy to see quite a few! This was the only one to rest long enough for me to snap it’s photo. I think it is a Pearl-bordered Fritillary or a Small Pearl-bordered Fritillary but would happily accept another identification from those in the know