Lovely! Is that honesty behind? I love honesty, it remind me of my parents' garden when I was a kid. I want to putting some in but I probably don't have space for it without losing something else :(
It's Dames Rocket (I think!) It's in a little section that I planted some wildflowers in a couple of years ago and have left alone to go wild since. I get all sorts popping up in there!
I had a rogue poppy pop up the other week. There's load waiting in the wildflower patch but it's a fair bit off blooming yet.