The Spider and the Fly

Went down the garden this evening to the part that we planted a mixture of wildflower seeds, the flowers are coming through nicely now, hopefully they will all flower at the same time to give a good display of colour.
While I was looking to see what was starting to flower (small red poppy and corncockle at the moment) I noticed this bright green spider, never seen one that colour before, attacking the orange coloured fly.
Extra shows, a corncockle bud alongside the spider.