Other licences and registrations Content in this section Hypnotism If you want to show, demonstrate or perform a hypnotism act in public, you must get consent from the council. Cooling towers If you have a cooling tower or evaporative condenser at your premises you need to notify us. Scrap metal collector's licence If you would like to operate a business as a scrap metal dealer then you will need a licence. These licences last for three years. Trading without a licence is a criminal offence.