Thanks everyone, just managed to catch up a bit

Pulled a couple & stripped the leaves etc back, no sign of anything.

The necks are very thick, and the bulb is soft.

along with the very distinctive leaves, they are beyond hope.

Eelworm still looks favourite, can anyone confirm this for me please.

They are planted in my big main bed. Onions & potatoes generally, this really will but the dampers on next year if it is eel worm