HEATHROW DIRECTOR,
An interesting little leaflet, published by your employer, has just dropped out of my CHIRP envelope. It says, among other things:
'You may have been given a clearance "Climb to FL80, set altimeter 1013"'. Note the word "to" in the context of a Flight Level.
It also says 'Do not use the word "to" when reading back a climb or descent clearance', and yet surely it is normal practice to repeat back what the controller says verbatim.
Confusing, ain't it!
Chalky
By the way, it wasn't me!! (with apologies to whoever uses that as a tag line)