From AW&ST (behind firewall for subscribers) - a snippet I found interesting....
European Defense Agency Advances Refueler Plans
......All A400Ms are built to be able to provide fuel using under-wing hose-drogue units (HDUs), but only 29 of Europe’s 160 or so A400Ms will be equipped with the modified rear door that allows the aircraft to employ a fuselage-mounted centerline HDU, usually used to refuel larger types.
Although not all nations are planning to buy the wing-mounted HDUs, Donnet is examining the potential of the EDA or a third-party agency owning a number of spare under-wing HDUs, possibly supported by industry, that could be leased by nations as needed.
The U.K. is not planning to use the A400M for refueling, but senior officers have stated a desire to fit HDUs to one or more of that aircraft to be deployed in the Falkland Islands in support of the four Eurofighter Typhoons based there. This would eliminate the need to deploy one of the U.K.’s Airbus A330 Voyager tankers to that site on a permanent basis.........