I managed to get this snap of two together, and am extra pleased that you can just see the curly tongue (proboscis) of the one on the left poking out (close-up view below). I was able to get really close without them flying off. They were all busily feeding - the way their tongues whipped in and out reminded me of a watch spring!
When I got home and went online to identify them - they were Painted Lady (Vanessa cardui), which arrives in the UK from Africa every year! I visited Butterfly Conservation's Migrant Watch website to log my sighting. 2009 has seen a mass migration with millions of butterflies arriving over the May Bank Holiday. I felt very blessed to have seen so many on my doorstep.
* SONG OF THE DAY: Dolly Parton - Love Is Like A Butterfly *