Big green fly

I did have some lovely spiders eyes to blip (some of you will be pleased I didn't blip those!), but I was out picking herbs for dinner and this big (at least 15mm body) green fly landed right next to me, on the strange metal animal thing I found on hard rubbish. I don't believe I have seen a fly like this before - it was iridescent and shimmery and very green.

Bigger big green fly