The millipede is just a millipede. It's the adult form. It lays eggs and they hatch into baby millipedes :)

I don't know what the plant is ...

Plant could well be the remains of a Eucomis autumnale

Why is it crammed into one side of the pot? The compost looks awful damp too. With all the slug damage going to be hard to i.d.

Thank you three, yes Moon Growe it's a bit crowded to one side, I rescued it from a raised bed where it wasn't very happy and had something else in that pot so slid it in on one side intending to reinstate it at another time but...Re the wet well we never have to water our pots here except perhaps for two weeks at height of summer. Nature takes care of it.

Then I hope that the outer pot has holes in the bottom or your corm is sitting in stagnant water in the plant pot.

Absolutely like a sieve as all my pots have to be with lots grit and drainage at bottom. Have learnt the hard way.

I was thinking that the plant was one of the larger Daylilies.

It was with the poster saying if came from a corm that made me wonder if it was Eucomis. Could also be Canna or Zantedeschia

Oops, Owdboggy! When he wrote "corn" I took it literally, thinking that he meant that he thought that it was a corn plant when he got it. I should have thought of "corm"! That raises the possibilities of Tuberose, Scilla peruviana, and Ornithogalum dubium, too, but Eucomis is the likeliest in the UK, from what I know.

Looking again, I don't think Eucomis or Scilla peruviana would split into more plants like that though, not in one season anyway. And Day lilies are sold here as dried roots in Spring, so you could be right on that score.
Not easy is it?

I know from experience that Scilla multiplies, sometimes like rabbits. I wouldn't call a Daylily root mass a corm, but that may just be OCD on my part.

Neither would I, but that is what they are described as on the packets. 'Bulbs' covers a multitude of sins.

In merchandising, pretty much any plant that can be dug up, have the leaves cut off and the soil washed off, be shipped halfway round the world, and then be expected to live and bloom! It's a rough life for a "bulb"! :D

Thank you all and apologies for my typo 'corn' in place of 'corm'. I will have to wait till next year and see if it produces some identifiable flower and let you know.