International School of London

All-through
Independent
Ages 3 to 18

Ofsted: Good

139 Gunnersbury Avenue, London, W3 8LGOpen in maps (opens in a new tab)

International School of London is an all-through school in Hounslow for ages 3 to 18. It is one of the 88 schools in Hounslow. Its latest Ofsted rating is Good, from an inspection in November 2023.

Ofsted inspection

Inspected 22 November 2023, report published 4 February 2024

Overall effectiveness: Good
Quality of education: Good
Behaviour and attitudes: Good
Personal development: Good
Leadership and management: Good
Early years provision: Good
Sixth form provision: Good
Safeguarding: Met

Read the full Ofsted report (opens in a new tab)

Pupil numbers and mix

298 pupils on roll, with places for 600

Special educational needs support25.8%

25.8%, 11 percentage points above the England average of 14.8%.

Education, health and care plan0.3%

0.3%, 5.7 percentage points below the England average of 6%.

Schools near International School of London

School	Distance	Ofsted	Results
Kew House	0.4 miles	No Ofsted inspection	Attainment 8: 66.9
Ark Acton Academy	0.7 miles	Ofsted: Good	Attainment 8: 42.1
Ark Soane Academy	0.9 miles	Ofsted: Outstanding	Not published
Twyford Church of England High School	1 mile	Ofsted: Outstanding	Attainment 8: 67.1
The Japanese School	1 mile	Ofsted: Good	Not published

School details

School type: Other independent school
Sector: Independent
Age range: 3 to 18
Gender: Mixed
Sixth form: Yes
Nursery classes: Yes
Headteacher: Mr Richard Parker
Phone: 02089925823
Website: isllondon.org (opens in a new tab)
Address: 139 Gunnersbury Avenue, London, W3 8LG
Local authority: Hounslow
URN: 102550

School details from Get Information about Schools, 17 September 2026. Ofsted outcomes published to 31 August 2026. Pupil mix from the school census, 2025/26.