The FAF have the sense to realise that interoperability with other nations' receivers which require a boom is advisable. Also E-3F and presumably its replacement? It also gives the A330MRTT a tanker-tanker capability.
Good to see that the FAF has procured its own aircraft, crewed by FAF crews. None of the expensive PFI nonsense with which the UK is saddled!
The UK will soon have several types which need to refuel from the boom: P-8A, RC-135W and (conceivably) F-35A if the F-35 order is reviewed.... Yet no boom tankers
