If they are I am surprised that they've yet to bloom ?

Drumsticks (Allium sphaerocephalon) ?

janinilulu said: Drumsticks-Allium-sphaerocephalon

Agree...Allium sphaerocephalon.
That is as big as the flowers get.
The heads are small and very compact.
In your pic you can see both the flowers and the seed heads.





Suggest you Google Allium cristophii to see many images.
https://www.google.com/search?...

Allium Cristophii look completely different....flowers heads are huge and each individual flower can be seen easily.

I see, a different kind of Allium.

aleema said: I see, a different kind of Allium.

May I suggest you have a look at this link for a UK company that sells Alliums.
It shows excellent pics to illustrate many of the ornamental onions...Alliums that you will find growing in London UK.
Including the 2 mentioned in this thread....Allium sphaerocephalon and Allium Cristophii

In yet another thread you show the Allium seed heads.

https://www.bostonbulbswholesa...

Interesting link, Nectarscordum seems the black sheep of the family.