The move has irked some supermarket bosses, who worked closely with the government to ensure delivery slots were prioritised for elderly or vulnerable shoppers during lockdown.

Many factories make down-payments on down to ensure delivery, but are being told that orders cannot be filled.

Three copies were sent by separate couriers to ensure delivery.

Once the operation moves from policing the no-fly zone to ensuring delivery of humanitarian assistance, the need for clear command will become acute.

These stamps only ensured delivery to the post office and not to the addressee.