Found in a pot when I was emptying the soil from it.
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Thanks David - I have put it back in the pot though it didn't seem to want to dig itself back into the soil - but will keep an eye on it. Probably Mullein - if you saw the state of the leaves on the Great Mullein in the garden, you'd know why!
Lat/Lng: 50.8, 0.4
OS grid ref: TQ7408