No smoking signs can be used to enforce a no smoking policy throughout a workplace or a public place. It is illegal to smoke in enclosed places in the UK since 2007. No smoking signs can be used at the entrance or exit of a building. To avoid any legal action or fines, we highly recommend to display no smoking signs clearly and when they are required. All no smoking signs are manufactured using external grade materials so they can be used either internally or externally. Please contact us if you can not find the no smoking sign you need.