Movers have no say on mail on the SA run as it is all contracted out by excel (for security) at LHR so get yer facts right before you start spouting bollox (to$$er)..
Apart from (not) loading the mail pallets to the ac of course... and correct me if I'm wrong (which of course you will....loud and long) but it only goes to LHR for X-ray. The loading of the ac is still down to the glorified stackers at Brize.