五眼裡只有英國沒有具體太平洋根據地，就其他四國來說，沒有拒絕日本入當虎翼的理由。至於北京將之視為五眼擴張之舉這點不滿就算了吧，當大家不知道紐澳英加四國軍費加起來還不到中國軍費的四成嗎? 就算加入日本的算也才中國軍費的六成而已，唯一力壓中國的美國其軍費增幅還不夠通膨吃的呢。 
[ It should be expected that any new formal addition would realistically come step-by-step and not via any swift elevation to membership. If Japan is greenlighted in any form, a more likely outcome will be that it would join in an official “5+1” format. This would allow for it to ease gradually into deeper cooperation. ]
https://thediplomat.com/2021/04/integrating-japan-into-an-expanded-five-eyes-alliance/
英國終於調整資源正式進入俄中情報戰階段了...
{ The British Royal Marines would assume the roles traditionally reserved for the country’s special forces. Special Air Service (SAS) And this Special Boat Service (SBS)– so that these units have more time and assets to complete “high risk” actions against other states, according to Totten.
“What can we do? [las Fuerzas Especiales] focus on [las tareas] more difficult, more complicated, against Russia and against ChinaThe senior officer announced. }
一年多後又進一步:
"The signing of another RAA by Japan would be seen as yet another example of Tokyo’s interest in cementing ever-closer security ties with a variety of partner countries amid rising Sino-U.S. tensions, especially over the fate of democratic Taiwan."
https://www.japantimes.co.jp/news/2022/11/06/national/britain-japan-defense-pact/
準英日同盟預備～
“根據英國國防部，該巡邏艇的常駐是假設日本及澳洲等補給上的支援。英國在3月時發表新的外交安全保障政策後再度「統合修正」，對外政策的重心往印度太平洋地域「傾斜」，做出調整。”
https://www.nippon.com/hk/news/yjj2021072000783/