I am the one and only

This is the one and only regular of its kind to my garden, a Gatekeeper. It's been around for a week or so now, and in fact it's here, outside the back door as I type. Pictured here enjoying the flowers of the golden Marjoram, it also likes to sun itself (when it gets a chance!) on the fence, and rest on the Japanese Anemones. No reference to Chesney Hawkes intended!