Seems the Japanese have aspirations in this area as well. I think it has been discussed that, amongst other things, they would be a very good partner to add to the Tempest consortium. If nothing else, the "artist's impression" of their efforts looks similar enough that a conversation with Tokyo might be in order.
It has been a long road. Japan’s Ministry of Defense has revealed that progress was gathering pace on the nation’s next-generation air dominance fighter program as Asia’s rising superpower, China, continues to enhance its own next-generation air dominance capabilities.