I am not sure whether this is hemlock or water dropwort.
No interactions present.
which I was told is H. W. Dropwort
Howardian Local Nature Reserve
Would probably need more pictures to determine this. Shots of the stem and leaves would be good and maybe even info. on whether there are any bracts below the umbels!!
Lat/Lng: 50.412, -3.6657
OS grid ref: SX817582
near the marsh plantation