Jumbo Driver,
Implicit in this is that there is therefore no requirement in MATS Part 1 for the pilot to additionally readback the QNH; it is sufficient for the ATSU to be aware that the pilot has received the ATIS which includes the QNH.
From the MATS Part 1 Section 3 Chapter 1 Page 10 para 11.5
'In the case of a departure ATIS, controllers must obtain a readback of all relevant
altimeter settings contained in the broadcast, unless the setting will also be passed
in association with start up or taxi clearance.'
So you DO have to orally confirm that you have the correct QNH - there is no 'implicit' at all.
DD