What is this root?

in Plants
Hi, we live in a rented property and there has previously been a 5 year treatment for knotweed in the garden. It's now finished so we've been advised we can dig the soil. However, I've just been clearing and found this root with some Sprouts coming off it. Does anyone recognise it as anything or think it could be knotweed again? I'm obviously reluctant to touch it anymore.

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I can't see what it is yet ... the leaves are too young ... but it doesn't have the very distinctive growth pattern of Japanese Knot Weed.
Possibly some kind of cow parsley like thing.
If you live in Derbyshire, as I do.
Bits of root will form new plants