London is one of the world's most international cities, and its private education sector reflects that. With a deep bench of British, IB and American programmes — alongside French, German, Japanese and other national curricula — the city offers expat families an unusually wide choice. The best international schools in London for 2026 combine strong academic outcomes with global student bodies and the kind of facilities you would expect from one of Europe's most expensive education markets.
Curricula Available in London
British independent schools follow the National Curriculum, leading to GCSE / IGCSE and then A Levels. International schools more often run the International Baccalaureate (PYP, MYP and Diploma), with several offering the IB Diploma alongside or instead of A Levels. American schools deliver a US high school diploma with Advanced Placement options. London also hosts strong national-language schools — French (Lycée), German, Japanese, Swedish and Spanish among them — that are useful when families plan to return home.
Top International Schools in London
The following schools are listed on International School Advisor with verified profiles. They cover the main international curricula and represent a cross-section of central London and outer-London options.
TASIS England
Set on a 46-acre campus in Surrey within easy commuting distance of west London, TASIS England is one of the longest-established American international schools in the UK. It offers an American curriculum from Pre-K through Grade 12 with both the IB Diploma and Advanced Placement options. Strong arts and athletics complement a rigorous academic programme.
Halcyon London International School
Halcyon London International School in Marylebone is a fully IB-authorised school for ages 11 to 18. It is known for its small class sizes, central location and explicit focus on sustainability and inquiry-based learning. A natural fit for families seeking a values-led IB pathway in central London.
International School of London
Located in Gunnersbury, west London, International School of London serves students from age 3 to 18 with all three IB programmes. It is recognised for its distinctive mother-tongue language programme, which supports students in maintaining their first language alongside English — a real advantage for globally mobile families.
School Fees in London
London has one of the most expensive private education markets in Europe. Annual tuition typically falls within these bands for 2026:
- Early years and primary: £18,000 to £30,000.
- Senior years (11–16): £22,000 to £35,000.
- Sixth Form / IB Diploma (16–18): £28,000 to £42,000.
- Boarding (where offered): add £15,000 to £30,000 depending on full or weekly boarding.
Some American and IB international schools sit at the upper end of these ranges, particularly those with central addresses. Additional costs include a registration fee (£200 to £400), a refundable deposit equal to one term's fees, school transport, lunches, uniform and trips. The UK applies VAT on private school fees from 2025 onwards, which has materially changed the headline figure for British independent schools — confirm the latest position with each school.
Best Areas to Live for International Schools
South Kensington and Chelsea cluster the French, American and several IB schools. St John's Wood and Marylebone are strong for the American School in London community and Halcyon. West London (Hammersmith, Chiswick, Ealing, Acton) gives easier access to ISL Gunnersbury and TASIS in Surrey. North London (Hampstead, Highgate) offers character and excellent state grammars alongside several private options. Always cross-check commute times with the schools you are short-listing — a 25-minute drive in central London can take an hour at school-run hours.
Admissions Process
Most international schools accept rolling admissions and respond within two to four weeks of receiving a complete application. Expect to provide the most recent two years of school reports, an English-language assessment for non-native speakers, an interview (often via video for overseas families), and references. Sixth Form / Diploma admission usually requires predicted IGCSE or equivalent grades. Apply six to nine months before your intended start date for the best choice; for high-demand entry points such as Year 7 and Year 12 at popular schools, even earlier is wise.
For more options across the United Kingdom, see the ISA UK schools ranking.
Frequently Asked Questions
How much do international schools in London cost?
Annual tuition typically ranges from £18,000 in early years up to £42,000 for Sixth Form / IB Diploma, with American and central London IB schools at the upper end. Boarding adds £15,000 to £30,000 per year.
Which curricula are most common in London?
The British curriculum (GCSE / IGCSE and A Levels) and the International Baccalaureate (PYP, MYP, DP) are the most widely offered. American schools and several national-language schools (French, German, Japanese) also operate in the city.
How early should I apply?
Apply six to nine months in advance for most schools. For the most competitive entry points (Year 7 and Year 12 at top IB and British schools) many families apply 12 to 18 months ahead.