Can you imagine the SAS doing collections/deliveries.
Deliveries - smash the front door down, lob in a stun grenade, forward roll into house, spraying room with automatic weapon fire before finally delivering the late Mrs Moggins letters.
Collections - blacked-out van screams to a halt outside post box, snatch(
) team dispatched, blow-off hinges of post box, stuff mail into sack, back into van and depart at speed.
You've got it all wrong. This is way the Hereford Hooligans would do it:
Deliveries - you wake up to discover your post neatly piled by your bed, despite the windows being shut, the doors locked and the mutt is still asleep on the landing.
Collections - you get a note under the door telling you to leave your post under the hedge* opposite Farmer Giles' barn, between the hours of 2300 and 2330. It's delivered as above in N Scotland by 0530....
*Called a DLB in the trade, aka dead letter box. The Commander of British Forces in GW1 was Gen Sir Peter de la Billiere, ex CO of 22, and always known as DLB....
His brother Fred was an FAA pilot, retired as a Commander.