yes they need to have the goodness put back in the bulb for next years flowers,leave them until they die down on there own

I never bother to deadhead, Bernard, just leave them alone to die back naturally. After all, when they naturalise in woodland, no one goes round and deadheads them all, do they. Foliage should not be cut for 6 weeks after the flowers fade, but removal of flower stems alone won't cause too much trouble.

If you want to cut the flower stalk off at the base, the loss of that little bit of chlorophyll will be negligible. Leave the leaves to die down naturally though. Feeding and watering if needed, before the leaves die off helps to build up a good bulb for next year.

I agree Bernard. I cut the flower stalk at or near the base and leave the leaves to die down. Seems to work fine each year

sorry i mis read your question bernard,i thought you were on about the leaves,i'm having a la la day,been along day.

Glad to know I haven't been doing my daffs out of their much needed nourishment - I can sleep easy now thanks to your reassurances. Ain't Goy grand.
Regards
Bernard.