On the edge of a large park, albeit on an overgrown patch not far from water.
No interactions present.
Is this the plant with the silvered 'disc' seed pods? If so I'm sure I've never seen it with flowers like this; but I am a long way from being even knowledgeable (much less an expert) on plants & flowers (Thanks to David & Lava..)
Feel free to look at my ongoing (hopefully improving) collection of pictures on Flickr:
... it is the plant with the silvered disc seed pods. That particular flower colour pattern isn't particularly common, but I seem to recall having seen it before.
Lat/Lng: 53.7735, -0.3453
OS grid ref: TA091320