In 1920, the renamed Lycée Français de Londres relocated to Cromwell Gardens, opposite the Victoria and Albert Museum.

The aesthetics displayed in the architecture of Patrice Bonnet's 1939 French Institute[8] were translated into small touches like the Art Deco designs of the termly "Tableau d'honneur" cards, (the roll of honour) given to pupils deemed to have worked hard.

Another notable feature of the time was that Lille University offered a first year of their humanities programme at the Lycée, for those completing the Terminales classes and arranged exchanges for teachers as well as pupils.

The bombed terraces directly opposite the Natural History Museum on Cromwell Road, which had been temporarily converted into tennis courts, were acquired by the French government, and a major development of this site was undertaken between 1955 and 1957.

As the school grew, so the kitchens faced an increasing logistical challenge to produce upwards of 2000 hot meals daily on Lycée monogrammed china.

In 1966 a Lycée excursion was led by Mme Raphael to Paris to view the Picasso Retrospective exhibition at the Grand Palais.

The return by rail from one such trip was briefly, though alarmingly, delayed by the Soviet led Warsaw Pact invasion of Czechoslovakia.

Pupils put on plays, mostly in French, at the Institute's theatre (now the Ciné Lumière) and art exhibitions in the entrance halls of the 'Institut' and 35 Cromwell Road.

With the help of former Olympic standard PE teachers, the Lycée was noted for its competitive prowess on the sports field, in the water and in the gym: handball, rugby, basketball, tennis, even cricket (a French invention!

[10] Each year, there was a steady stream of applicants to Oxbridge and to the Grandes écoles and places taken up to study architecture, economics, engineering, medicine, music and science in France, the UK and the USA.

To underscore the importance of Franco-British understanding, the Alliance Française annually sponsored a special award to one pupil for "Camaraderie Franco-Britannique".

The ceremony used to be marked by an organ recital by the school's Master of Music, the former Notre Dame de Paris organist and composer Jean Dattas.

Due to limited space at the South Kensington site, the Lycée opened two "feeder" primary schools, based in Clapham and Ealing, in 1993 and 1995 respectively.

In addition to serving the francophone communities in London, 9% of pupils at the Lycée are English-speaking or of British heritage, placed in the school by parents opting for a bilingual education for their children.

The Lycée maintains a strong commitment to sport and takes part in competitions with British schools, particularly in basketball and rugby.

[19][20] The entire school is subject to British Ofsted inspections to assess its overall performance, governance and the development and welfare of pupils including Safeguarding.