For the purposes of section 274 the list of must-provide services is as follows—
every service of television programmes provided by the BBC so far as it is provided in digital form and is a service in relation to which OFCOM have functions;
the Channel 3 services so far as provided in digital form;
Channel 4 so far as provided in digital form;
Channel 5 so far as provided in digital form;
S4C Digital;
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Secretary of State may by order modify the list of must-provide services in subsection (1).
In determining whether it is appropriate, by an order under subsection (2), to add a service to the list of must-provide services or to remove a service from that list, the Secretary of State must have regard, in particular, to—
the public benefit to be secured by the addition of the service to the list, or by its retention in the list;
the likely effect of the proposed modification as respects the costs to be borne, under arrangements entered into or imposed under section 274, by the persons who, after the coming into force of the modification, would have to be parties to those arrangements; and
the extent to which that effect is proportionate to the benefit mentioned in paragraph (a).