Not sure if this is a garden variety of a real wildflower
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When I have seen Campanula lactiflora it has always been much more floriflerous as in the other observations, so I don't think this is it. Don't know what it is, though!
The basal shoots shown in the last photo are very much like the ones in my garden, but other species may also look like this, for all I know. C. lactiflora can get very straggly if not well fed...
Lat/Lng: 53.78312, -3.05728
OS grid ref: SD304323