Age consideration (25-32) need clarification

Hi All, till what stage age is getting considered ?? Is it till getting invite or till getting grant ?? I am currently on the verge of turning 33 in MAR-16. If I lodge an application in Feb-16, and get invite by first week of MAR-16, will that be OK if I turn 33 before getting grant but received invitation ? Looking forward to clarification in this regard. Thank you.