This is a tall, green, skiky plant, with yellow flowers on it
No interactions present.
You did well to interpret this as silky. S. cineraria is an alien so can occur anywhere and S. erucifolius is much neater.
I think this is meant to say "spiky" - see the keywords. Doesn't help with the ID, though!
Lat/Lng: 52, 1
OS grid ref: TM060377
Landscape undisturbed, rural and lots of greenary.