You need the CPL issued in 3yrs (and as noted the exam credits are good for 3yrs to complete the IR as well).
No CPL in 3yrs from date of last exam - do them all again.
No IR in 3 yrs from date of last exam - take the IR designated papers again.
Either way, plan ahead. they are time limited.
There is no (current) need to resit papers for currency, so in that sense they are a pass for life as long as some license currency is maintained (but I'm vague about this bit ... 7 years ?? Lasors is your friend). There is some update to the H side which includes NVG theory which is new. I don't believe there is any requirement to go sit this as an extra few Q's for instance.
h-r
