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... the third photograph is difficult to identify, but I think that it's Cerastium fontanum rather than Stellaria media or a 3rd species - see the sessile ovate-lanceolate leaves. (Only the upper leaves/bracts of Stellaria media are sessile.)
Thanks again. Your comments are really useful.
Lat/Lng: 53.62724, -2.35275
OS grid ref: SD767145