They issue green garden waste bins and collect fortnightly all summer, even when the grass has stopped growing due to the hot summer, it's good to have them collected but I only needed to put mine out about four to six weekly and then it was never full.
Now the trees are dropping acorns and according to google around 200,000 leaves (Mature Oak) they don't collect them from the end of September, why stop garden waste when you most need it?