Hi David,
You've seen impressive numbers of butterflies recently. I am particularly envious of your Holly Blue sightings

Very few get reported in North Cumbria where I live & they are a rare visitor to my garden. I have occasionally seen one in South Cumbria, so I do well if I see two in a year. I have never seen one with wings open sadly.
We've had light snow two days this week and low temperatures. I am looking forward to the weather improving and butterflies returning to the garden. I have five Cuckoo Flower plants in the garden in full flower just waiting for the Orange Tips.
Sarah