This will be of particular interest to those still in the business of popping small children up chimneys, but is of interest to anyone employing children for any kind of work in their workplace.
The Department for Children Schools and Family has produced an excellent Guide on Employing Children, covering everything from the types of work children can (and cannot) do, through the number of hours they can be required to work, to specific health & safety requirements. This is a really useful document that we suggest you save and refer to when necessary.