Private Health Cover - do I really need a GP referral to see my chiropracter .. even though they ask for it, they never check

[Twiglett]

and it seems such a waste of a GP's time to be honest

I have a phone call in to the GP to ask them to make a note that they've referred me

the PHI have already cleared me seeing him as I said that I had been referred by GP

they have never checked before nor asked for the letter nor have I ever given a letter to my chiropracter