
In the gardening books they suggest using containers such as this

but just putting it on the ground is fine - and can help keep weeds down. Leaf mould can take up to two years, so it's a good thing to start with building up a garden.
I'm not proud - I've been doing this for years. Yes, there's the occasional fag end, but not too many. It's worth checking when you pick the bags up that they're not too heavy, which would imply things in them other than leaves. Generally it's drinks cans and bottles.JRobinson wrote: just pointing out that you probably should go through the leaves first, to remove fag ends, and plastic, and other uncompostables, and also be aware that the council workers may object to you taking this without permission.