Ragwort is covered under the 1981 Wildlife and Countryside Act. This is what the Act saysSection 13
"(1) Subject to the provisions of this part if any person
(a) intentionally picks, uproots or destroys any wild plant include in schedule 8 ;or
(b)Not being an authorised person intentionally, uproots any wild plant not included in that schedule.
he shall be guilty of an offence. "
This means that it is illegal to uproot ragwort unless you are the owner or occupier of the land where it is growing or have their authorisation, or if you have written authorisation to uproot ragwort from the local authority, Environment Agency, a water undertaker or a sewerage undertaker
There are cases reported on the internet of people doing this with ragwort on nature reserves where, mislead by inaccurate campaigning by agricultural groups, they think they are doing the right thing.
There are also cases where other similar looking plants have been removed.