90 day by post

[sangtip2]

I have been doing my 90 day report through the mail for over a year now and the letter has always come back to me in a week or less.  This time it has been two weeks and no letter.   How long should I wait before going to immigration?   I have the EMS  receipt and tracking shows that my letter was delivered.

[DrJack54]

Which immigration office?

At CW it can take several weeks.

I'm thinking that your using another office.

Just wait.

They may not even process it till your due date. 

You posted 2 weeks prior to due date so can be 6 weeks from then.