Thank you everyone. I thought it was a type of allium but other than that had no idea. As you say the seed heads are lovely too. I will be sowing the seeds so I can increase the numbers.
I have planted a couple of these and they flowered for the first time. Funny how the flowers hang down, but the seed heads stand up. From what I understand it takes years for seeds to grow big enough to flower.
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It was formerly known as Allium bulgaricum.
When you don't even know who's in the team
S.Yorkshire/Derbyshire border
https://www.rhs.org.uk/Plants/96507/Nectaroscordum-siculum/Details
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