A report from the MoD said that it constantly seeks interoperability between intelligence, surveillance, target acquisition and surveillance (ISTAR) systems, including UAV, but added, "There is a tension between working towards this goal through open or agreed standards, and the commercial imperative of key industry players to establish their own proprietary technology as the de facto standard. " Replying to a report from the Commons Defence Committee, the MoD highlighted three major downlink standards used for dissemination from ISTAR platforms, two of which are either proprietary or subject to U.S. Traffic in Arms Regulation controls. The MoD acknowledged that interoperability is being achieved on a third, relatively low-level, analogue downlink standard.
The MoD sounded a note of caution over its ability to use U.S.' Reaper UAVs, which it has acquired independently, because, although the U.K. has "operational sovereignty", there are good operational and cost-effective reasons for sharing U.S. facilities on which the U.K. is dependent. There is a need to retain alignment with the Reaper technical baseline to benefit from hardware and software upgrades, and any move away from this to develop or upgrade Reaper independently would "introduce an unacceptably high level of technical risk".

