Yes, despite it's name, this Act doesn't do anything about controlling ragwort, merely allows the Minister to produce a code of practice. That's what Jake found hilarious.

I suppose that, if there is a dispute about controlling ragwort, and one side says "I have taken all reasonable steps to prevent it spreading", the other side can say "have you taken all the steps described in the Code of Practice?"

You are surrounded by grazing land, I believe. I am in the middle of town, with one horse half a mile away as the crow flies, and the nearest cows or sheep a mile away. On the other hand, I do have cinnabar moths and no groundsel - they lay their eggs on species of Senecio, not on grasses - so I don't feel the same need to try to eradicate a native plant.