These are Larkspur an annual of the Delphinium family. Look them up on Google - Larkspur (Delphinium consolida) for more details.

Thanks Honeysuckle

hmmm. I thought this might be a lithadora. What's the difference?

Height for one thing. Lithodora is only a few inches tall, whereas Larkspur can be up to 6 feet.

Lithodora has short, awl-shaped foliage--much like a short rosemary--is bushier, and the flowers are rarely more than a cm across.

I must have posted right after you Owdboggy. There are dwarf forms of Larkspur, but they will still get a good 30 cm tall.
The pictured ones might also be a form of Delphinium grandiflorum.

I was going by the seed pods shown in the top left which I thought made it a larkspur, but the modern way of saying these are all Delphiniums (which of course they are) is more confusing than calling these Larkspur, which then everyone knows are annuals. I have seen these sold under the 'Delphiniums' label (just Delphinium, nothing else) which leads anyone not familiar with them to suppose they would be perennials, slightly misleading at least!

Larkspur have a single, bean-like pod, while these trilobed pods are more like D. grandiflorum.