def persons_significant_control(self, num, statements=False, **kwargs):
        """Search for a list of persons with significant control.

        Searches for persons of significant control based on company number for
        a specified company. Specify statements=True to only search for
        officers with statements.

        Args:
            num (str, int): Company number to search on.
            statements (Optional[bool]): Search only for persons with
                statements. Default is False.
            kwargs (dict): additional keywords passed into requests.session.get
            *params* keyword.
        """
        baseuri = (self._BASE_URI +
                   'company/{}/persons-with-significant-control'.format(num))

        # Only append statements to the URL if statements is True
        if statements is True:
            baseuri += '-statements'

        res = self.session.get(baseuri, params=kwargs)
        self.handle_http_error(res)
        return res