OFCOM must not set an SMP services condition by a notification which does not also make the market power determination by reference to which the condition is set unless—
OFCOM must not modify or revoke SMP services conditions applying to a person except in a case falling within subsection (3) or (4).
The first case is where, for the purpose of determining whether to make the modification or revocation, OFCOM have—
The second case is where OFCOM are satisfied that there has not—
been a material change in the market identified or otherwise used for the purposes of the market power determination by reference to which the condition was set or last modified.
OFCOM must not modify SMP apparatus conditions applying to a person except where, for the purpose of determining whether to make the modification or revocation, they have—
A change is a material change for the purposes of subsection (1) or (4) if it is one that is material to—