Hi FlyBoyFloyd
On first reading I'd say your right. All instrument approaches should have an IAF.
Sadly after doing research it seems that PAN-OPS (I guess you work to the US TERPPS critera) say that an approach MAY have 5 segments.
ARRIVAL, INITIAL, INTERMEDIATE, FINAL, MISSED APPROACH
Checking the UK AIP EGLL London Heathrow 09L ILS/MLS approach plates there doesn't seem to be an IAF just a FAP.
So it seems he's right. But not for the logic he thought.
Learn't something new. Cheers