On thistle (or possibly burdock)
No interactions present.
Rod...for what it's worth, I would only be 'As sure as I can be', if I had the specimen in front of me.
Also...you should not add the ID again, but should agree with Chris' ID; that's the etiquette on iSpot.
My Flickr photos...
Lat/Lng: 51.44, -0.02
OS grid ref: TQ377730