PIC1

PIC2- LEAVES

PIC 3- STEM (REALLY THICK)

PIC 4- HEIGHT AT ABOUT 250 CM OR 2 AND A HALF METRES

It isn't Giant Hogweed, David. I believe you have Angelica sylvestris, Wild Angelica. But there are several similar plants which are poisonous so don't start nibbling at it from my id.

BTW for future reference it is an offence in the UK and NI to uproot any wild plant without the permission of the landowner.

Here is a link that might be useful: Wild angelica

i dig up plants all the time out of the woods and bring them
to my house butterfly milk weed flower roots are about 3 to 5 inches down so i advise you to take a big shovel to dig them up and don't brake the roots keep them wet after digging them up also you may have to wait for a year til you get to see them flower

those flowers in your picture have long roots too.