(1)If the Commission are satisfied that it is appropriate to do so in pursuance of any international agreement to which the United Kingdom is for the time being a party, they may give to the holder of a local delivery licence a direction requiring him not to relay television programmes which—
(a)are transmitted from a place outside the United Kingdom, and
(b)are included in any service specified or described in the direction.
(2)Any direction under this section may describe a service for the purposes of subsection (1)(b) by reference to such matters as the Commission think fit.
(3)Any such direction shall, according to its terms, have effect either during a specified period or for an indefinite period.