Note of caution.. As far as I know Bluebells (Hyacinthoides non-scripta (formerly Endymion non-scriptus or Scilla non-scripta) are not edible.. though I've found nothing saying they are actively toxic.
To what degree and what the effects are I do not know and have not Googled, but bluebells are toxic. About the only thing that can and does eat them are muntjac and this is one of the major reasons behind a push to eradicate muntjac. Some woodland that since for ever has been carpeted with bluebells, are now all but cleared due to grazing muntjac.
The last time that I checked, I recall that there was mention of fencing them out, but I think you will that find Wolves Wood near Hadleigh used to be carpeted but has been stripped bare of them.
P.S. I just Googled "bluebell toxins" and got 526,000 hits.