Leeds City Council are pretty good. When I was pregnant with James they came to our ante natal classes and gave a demonstration of the various types of cloth nappy. They also had/have two options, either a trial pack of reusable nappies (you specify sex of child or GN) or they repaid up to £30 for a £50 cloth nappy purchase on proof of receipt.
I got a Bum Genius and a two part fitted system (can't remember what the nappy was) and also 10 disposable liners. It's slightly different now, they do a BG and a Pop In plus the liners or the cash back.
Anglesey - nothing. I emailed them to ask why not and they replied with "how could we get people interested in cloth nappies". I sent them a long and detailed reply and...never heard back from them. It's a truly awful local council, though. No environmentally supportive schemes whatsoever. They even send lorries around collecting compost from people's houses instead of providing free compost bins.
I'm moving to Huntingdon and they also don't help with nappies.
You'd think the councils would get on board, wouldn't you? Must save them money not having a few thousand nappies to collect, process and store in landfill.