Hi,
Now that you have your AOR, you will get your MR soon, it will be by email too. Then once the MR have been sent to them, they will do a background check. If they are satisfied with everything, they will ask you for your passport. About the PCC's, wait till you get your MR request and then call the VO and ask them. But again assuming that you are not in Canada, I'd suggest you wait for them to ask you for the PCC's. Or here is another suggestion, since you've put your VO as London, why dont your call CIC London office and give them your File Number and they should be able to help you out.
Thanks,
Kia99