Reading through VFS update, it seems, VFS would only contact those who submitted passports before lock down and were returned blank as offices closed down. For anyone who received PPR during lockdown, I think they will have to wait for update from VFS. The courier services will not be opened for new PPRs, immediately.
Banking on statement -
Customers who completed their 2 way courier process prior to lock-down will be contacted by VFS Global on e-mail.
We request other customers holding Passport Submission Letter to remain patient and follow us for updates.