My understanding, and it may be wrong, is that all infringements involving NATS result in a mandatory report, with the controller being relieved from duty while the report is made. Other airspace controllers are being firmly encourage to report infrigements which of course include any ATZ sor perhaps designated danger areas activated by NOTAM or otherwise.
There then seems to be some debate as to what happens next. Some say that there has been a significant increase in the number of pilots who are referred to the GATSCo course who is the CAA's chosen provider for re-education, along similiar lines to traffic speed awareness courses. The pilot pays the cost and probably ends up with a nights hotel stay. It would seem there is no reference to instructors any longer, which, in the past was often the case. It would seem felt this has been well promulgated through CAP1404 and elsewhere.
It would seem that GATSCo has the contract with the CAA and the income now forms a signifcant part of their total income from the other charitable work they undertake.
Some beleive the new approach will prove very effective, others are less certain.