These are allium seedlings and the "tiny black globular thing" is the remains of the seed. It will be a year or two before the seedlings flower. Be aware that they could make a nice clump or become a weedy menace in your garden.

Could they be purple sensation Bulba as they're the only ones I have left now? Will I be able to tell this year which they are?:-)

They will be seeds from your Purple Sensation, Bornagain, but the resulting flowers may not be quite the same as the parent - they may be even nicer.

Oooh that could be rather exciting couldn't it. Do you know when they'll be big enough to bloom and if it's possible to transplant some at this stage? :-)