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Not sure about this one- I'll have to go back and check on the leaves as they don't show up very well in the photo and I didn't think they were large or incised enough for hogweed, but I am probably wrong ... I always thought these were cow parsley, I didn't realise there were so many flower heads that look similar but are actually very different plants.
Looks more like cow parsley to me, but cicuta58 should know.
But the leaves are not divided enough for Cow Parsley.
Lat/Lng: 51.3061, -2.1977
OS grid ref: ST863563
Housing at entrance to lane but then farmland (arable and some cattle) - hedgerows at side of lane with wide grassy verges. Housing is gradually encroaching on the land and probably much of the plantlife will be lost in years to come