It should take 10 days and yes the police will come and you will need to be present or someone needs to be present at the address and they can call you to come right away.
App Revieved : June 28 2017
AOR1 : August 1 2017
SA: August 11 2017
AOR2: September 28 2017
Medical pass: December 20 2017
Addition docs request : May 02 2017
Pre Arrival: May 22 2017
DM : May 23 2017
PPR : May 23 2017
My mom knows a guy working at the high comission and he said that they have a lot of backlog and that they are calling for PPR when its near the 12 month mark.