Geez guys. Not listening to readbacks - hardly the same as an operator or ANSP not passing through a change message. I fail to see how you can compare the two.
All I am saying is that is LHR have seen too many errors happen in aircraft type being incorrect, what measures are being taken to avoid the necessity of asking each time? Why do [I]most[I] operators/ANSPs around the world get the correct information passed down the line from departure to arrival?
Cheers,
NFR.