Now you and I both know this is not exactly true HD , it was certainly a while ago that it became the "norm" in some places to have to add the QNH when acknowledging the ATIS letter (what a pain!) ... but it was not that long ago in the general scheme of things that it was more succinct ... (i.e. acknowledge receipt of Information X with aircraft type on first contact with XXXX Ground).
Not so Jumbo, I've been an ATCO for 21 years and QNH readback has been mandatory for that at least that period, perhaps not enforced at some units; but none the less mandatory, for very very obvious reasons
