Just to update this thread. Many councils still have schemes. Some have gone, some have changed and some new ones have started. I think with all of them you will only get the offer once now.
An article recently published in the Daily Mail, slated councils for “Wasting” council tax payers money, but they failed to take into account the costs to the council of people who use disposable nappies 0 each baby’s nappies cost their local coucil about £100 to dispose of, so the nappy incentive schemes are actually not only self funding, but they actually SAVR+E councils money!
I have a fairly up to date list of councils which currently have schemes, and what they are offering (each council is different) . If you would like a link to it, please PM me