s 6 Prohibition of use of radioactive material without registration.
No person shall, on any premises which are used for the purposes of an undertaking carried on by him, keep or use, or cause or permit to be kept or used, radioactive material of any description, knowing or having reasonable grounds for believing it to be radioactive material, unless either— (a) he is registered under section 7 in respect of those premises and in respect of the keeping and use on those premises of radioactive material of that description, or (b) he is exempted from registration under that section in respect of those premises and in respect of the keeping and use on those premises of radioactive material of that description, or (c) the radioactive material in question consists of mobile radioactive apparatus in respect of which a person is registered under section 10 or is exempted from registration under that section.