Plant ID please?

I went to weed a bit of my veg patch yesterday and found this gorgeous little thing growing there. I certainly didn't plant or sow it and I don't recognise it, although the flowers do look a bit like a little wild climbing pea that grows elsewhere in the garden. It's fairly sprawly, only about six inches high. The majority of the leaves in the foreground belong to it. Can anyone identify it for me, please? I'm going to have to leave it in situ and plant veg around it, as it's too pretty to move!