Is this a worn Fritillary?

I spotted this earlier this evening, I haven't seen one in Derbyshire before but I know we do have Fritillaries, might it be a very worn Dark Green Fritillary as you can see spots on the underside (I was originally thinking Silver-washed Fritillary) ? It was trying not to be photographed so the pics aren't good and I didn't get a second chance

Shirl