the consignor of radioactive material shall ensure that such of the requirements specified in the Approved Document as are applicable to the consignment of that material are complied with in relation thereto;

the operator of any freight container, tank container, tank wagon or wagon which is being used for the carriage of radioactive material shall ensure that such of the requirements specified in the Approved Document as are applicable to the carriage of that material are complied with in relation thereto;

the operator of any train which is being used for the carriage of radioactive material and each infrastructure controller upon whose railway the material is carried, shall take all reasonable steps to ensure that such of the requirements specified in the Approved Document as are applicable to the carriage of that material are complied with in relation thereto;

any person who designs, manufactures, imports, supplies, modifies, repairs, or tests a package or tests radioactive material which is intended to be, or is being, carried shall ensure insofar as they are matters within his control that such of the requirements in the Approved Document as are applicable to that package or radioactive material are complied with in relation thereto.