sorry i have taken my pccs from SSP offices......have no idea about regional passport office procedure....u need PCC for all the places where u lived for more than 6 months since ur 18 years of age......
I got an e-mail from consultant and he asked me get just two PCCs, one from my current address and one from my permanent address. He said that if the visa office has any doubts then they will ask for a PCC from a specific place. Other than that we just need to get it from the current address where you have residing for more than one month and one from the permanent address mentioned on your passport.