issues an enforcement notice requiring an activity to be stopped within a period specified in the notice, and

considers that a relevant activity ought to be stopped before the end of that period.

an activity the enforcement notice requires to be stopped;

any activity carried out as part of that activity or associated with it.

refer to the enforcement notice,

prohibit the carrying out of the relevant activity on the land to which the enforcement notice relates (or on any part of that land specified in the stop notice), and

specify the date on which it is to take effect.