s 98 Mail-bags not to be subject to control by harbour authorities.
Nothing in a statutory provision (whenever made) with respect to a harbour authority shall extend to regulate or subject to control mail-bags— (a) carried by a postal operator in connection with the provision of postal services , (b) consigned by a postal operator in connection with the provision of postal services to another for carriage (whether to a foreign postal administration or not), (c) consigned by a foreign postal administration to a postal operator in connection with the provision of postal services for carriage, or (d) consigned by one foreign postal administration to another and which, when in the United Kingdom, are in the charge of a postal operator in connection with the provision of postal services .