It strikes me that the RAF would do well to adapt the part of their Voyager tanker fleet that doesn't have a hose-and-drogue from the stern midline position to have a boom to refuel these and other aircraft in the RAF inventory that don't have capacity to refuel from hose-and-drogue
For the RAF, these are generally American bought aircraft like the RIVET JOINT and probably the AWACS replacement - given these are often deployed from home a long distance and are in small numbers only it would allow the RAF to extend mission duration for these types
Alternatively, if/when the USAF retires the B-52, I think currently scheduled to be sometime in the Captain Kirk era of the future, perhaps everyone could shift across to the hose-and-drogue style?