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There is a superficial similarity but ground ivy flowers are purplish rather than reddish there are other differences too
Thanks, that's very helpful. We've got acres of it in the area (Westhay, Somerset) and I was hoping to find it being used by bumblebees but no: maybe not a good pollen or nectar source?
Lat/Lng: 51.1855, -2.7991
OS grid ref: ST442432