A public charitable collection means a collection of money, for charitable purposes, from the public, (whether or not you buy anything), taken either in a public place or by means of visits from place to place (e.g. a pub crawl or house to house).
A 'public place' is one where the public has unlimited access, such as the street, but does not include shopping malls or car parks. If you wish to collect in these places you must first obtain permission from the management responsible for the place in which you want to collect.
Charitable purposes are any charitable, benevolent or philanthropic purposes.
There is no fee associated with requesting permission to hold a collection.