DFC.
I would agree with White Hart that the new system was introduced by NATS with cost savings and not safety in mind. I worked in the ATC system for thirty years and have severe reservations about timely and effective overdue action being taking in the event of me being overdue when flying. I have agreed an unofficial system with an ex-colleague who is also a pilot that I will call him when I depart with a firm ETA and in the event of me not calling him within a certain time he will call the police to initiate overdue action. I appreciate that it is an unofficial system, but it is one that I have more faith in than the present hotch-potch of responsibilities and agencies particularly as it is my life and my passengers lives on the line.