The advertisements must be clearly distinguishable as such and recognisably separate from the rest of the programme.
The amount of time given to advertising in the programmes shall not be so great as to detract from the value of the programmes as a medium of entertainment, instruction and information.
Advertisements shall not be inserted otherwise than at the beginning or the end of the programme or in natural breaks therein, and rules (to be agreed upon from time to time between the Authority and the Postmaster-General, or settled by the Postmaster-General in default of such agreement) shall be observed —
as to the interval which must elapse between any two periods given over to advertisements;
as to the classes of broadcasts (which shall in particular include the broadcast of any religious service) in which advertisements may not be inserted, and the interval which must elapse between any such broadcast and any previous or subsequent period given over to advertisements.
In the acceptance of advertisements, there must be no unreasonable discrimination either against or in favour of any particular advertiser.
The charges made by any programme contractor for advertisements shall be in accordance with tariffs fixed by him from time to time, being tariffs drawn up in such detail and published in such form and manner as the Authority may determine.
Any such tariffs may make provision for different circumstances and, in particular, may provide, in such detail as the Authority may determine, for the making, in special circumstances, of additional special charges.
No advertisement shall be permitted which is inserted by or on behalf of any body the objects whereof are wholly or mainly of a religious or political nature, and no advertisement shall be permitted which is directed towards any religious or political end or has any relation to any industrial dispute.
If, in the case of any of the television broadcasting stations used by the Authority, there appears to the Authority to be a sufficient local demand to justify that course, provision shall be made for a reasonable allocation of time for local advertisements, of which a suitable proportion shall be short local advertisements.