Notifications - F10s
Every day on which construction work is likely to be carried out should be counted, even if the work on that day is of a short duration. This includes holidays and weekends.
The client[2] has the duty to notify a construction project. In practice however, the client may ask someone else to notify on their behalf.
Maintenance
Principal Designer (PD)
The client[5] has the duty to appoint the PD[6]. If you are no longer involved with the project, the client must appoint another PD. You will still be responsible for the design decisions you made in preparing the original plans. The new PD must then take responsibility for any design decisions made following their appointment.
Yes. You can choose to take on the PD[7] role yourself. If you do you must have the skills, knowledge, experience and (if an organisation) organisational capability, to carry out all the functions and responsibilities[8] of the PD.