IndependentData as of May 2026

International School of London

139 Gunnersbury Avenue, London, W3 8LG

Other independent school

Pupils

397

Ages

3-18

Capacity

600

Inspected by ISI, not Ofsted

Since September 2023, ISI no longer awards an overall grade like Good or Outstanding. Read the school's latest report for compliance, significant strengths, and areas for improvement.

Find reports on isi.net

Inspection

ISI inspected

Community & Reviews

What parents say and who teaches here

Parent Reviews

Location & Nearby

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Data shown for guidance only · confirm details with the school before applying

About International School of London

International School of London is a secondary school in London, Hounslow. The school has around 397 pupils on roll. Use this page to explore performance trends, inspection history, admissions notes and neighbourhood context before applying.

Location: 139 Gunnersbury Avenue, London, W3 8LG | More schools in Hounslow

Frequently asked questions about International School of London

Where is International School of London located?

International School of London is a secondary school in London, Hounslow (W3 8LG).

How many pupils attend International School of London?

International School of London has around 397 pupils on roll according to the latest school census data.

How can I compare International School of London with other schools?

View International School of London's full profile on FavSchools for multi-year results and Ofsted history, then use the comparison tool or interactive map to explore nearby alternatives in Hounslow.