Goodtime Adventures
Contributor
Yes, any instructor can finish your cert - although it may cost a little more than you think, as unless you have the PIC/online PIC that comes with your AOW manual/online manual, your certifying dive centre will have to purchase another one. But purely in terms of sign up, as long as you have signed off proof of the previous 4 adventure dives you've done however (preferably in the form of relevant training records) you should have absolutely no problem.