日本人学校有限会社は、１９７６年に設立され、ロンドン補習授業校とロンドン日本人学校を運営しています。
前身は、１９６５年９月に発足した日本クラブ主催の「日本語会」です。児童生徒２０名、講師４名で始まり、１９７４年には児童生徒数の増加に伴い政府派遣教員１名が配置されました。１９７５年５月、日本クラブにより日本人学校全日制校の設置が決議され、１９７６年には初代校長が着任、英国私立学校として認可されました。そして１０月、日本クラブ（小学部）、日本大使館広報センター（中学部）を仮校舎として開校しました。その後増加する児童生徒に対応するため、１９７７年４月にカムデン校舎、１９８７年から現アクトン校舎に移転し現在に至っています。

The Japanese School Ltd. was established in 1976 and operates the The Japanese School in London and The Japanese Saturday School in London. Its predecessor was the “Nihongo-kai (Japanese Language Association)” established in September 1965 by the Japan Club. It started with 20 students and 4 instructors, and in 1974, due to the increase in students, one government-sponsored teacher was assigned. In May 1975, the Japan Club resolved to establish a full-time Japanese school, and in 1976, the first principal was appointed, and the school has received accreditation as independent school in the UK. Then, in October, it opened using the Japan Club (primary school) and the Japanese Embassy Public Relations Centre (secondary school) as temporary school buildings. To accommodate the increasing number of students, it moved to the Camden campus in April 1977, and then to its current Acton campus in 1987, where it remains today.