Hi bro,
Thanks
Please find my reply below:
1) Which country PCC do you mean? I assume you have sent PCC from Pakistan, correct? normally PCCs are valid for 1 year, so most probably you won't need to send PCC again because your processing will be started before the old PCC expires. Unless your submitted PCC is issued long time ago.
Since you will be completing 6 months by the time your application will be processing, you will have to submit Saudi PCC.
2) Yes, anyone can do medical anywhere from the Panel Physician list. It is recommended that you both do the medical in the same week so that VO will get both of them ready at the same time.
3) Once processing is complete, you will be asked to send your passports to CHC Riyadh through VFS (detailed instructions will be sent to you from London by email). Usually it takes 5-7 days to get your passports back with visa.
4) You can ask your Government Relations department in the ministry to get your passport for that reason, it is a normal practice. Maybe they will ask you the reason, you can show them the email requesting the passport, or you can give them any other reason if you don't want to disclose that you are immigrating to Canada at this time.
Let me know if anything is unclear.
Wish you all the best.