Originally Posted by
IO540
It is far easier to become a CRI than to become any of what traditionally used to mean a "flying instructor".
If you don't care about getting paid, you just need a PPL and a little bit of other stuff. Practically anybody with a PPL can become a CRI if they want to.
Anyone with minimum 300hrs, £1500 to spare (two quotes I've been given) and passed a 25hours theory course + min 3 flight hours instruction + flight test with an instructors examiner.