Halcyon London International School
Halcyon London International School offers a rigorous International Baccalaureate programme with a focus on personalised learning and holistic development.
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Our take
Independent co-ed senior school in Westminster for ages 11–18. Selective entry, top-tier London fees.
- Families seeking a senior school for ages 11–18, with thinking already on 11+ or 13+ entry.
- Families who prefer a co-educational setting over single-sex.
- Children who can demonstrate strong academics at entry assessment — this is a selective school.
- Families comfortable with top-tier London independent fees in exchange for the level of provision.
- Internationally-mobile families wanting IB or American-style qualifications rather than only A-levels.
- Fees sit at the top of the London market. Factor in extras (uniform, trips, lunches, music tuition) before committing.
- Selective entry — assume some form of assessment at the relevant entry point. Plan tutoring or familiarisation early if needed.
- SEND provision isn't documented in our profile. If your child has an EHCP or specific learning needs, ask admissions about case-by-case capacity before applying.
- Curriculum is IB/American-style rather than A-Level. Check that your university plans (UK or otherwise) align before committing to the route.
About the head
Our mission is to provide an exceptional education that draws out the unique potential of each student, fostering innovation, collaboration, and community.
Distinctive features
International Baccalaureate curriculum (MYP and Diploma Programme)
Not-for-profit school
Research-driven wellbeing approach
High teacher-to-student ratio
Personalised mentoring
Central London location
Emphasis on digital and cutting-edge technology integration
Activities & co-curricular
sport
academic club
other
Facilities
academic
Latest exam results
Our Class of 2025 IB Diploma students achieved excellent results, gaining places at prestigious global universities including LSE, UCL, Imperial College London, and top international institutions. The results reflect not only strong grades but also collaborative teamwork and diverse talents.
Where leavers go
| 2025 | 2024 | |
|---|---|---|
| Cohort | — | 25 |
| Oxbridge | — | 0 |
| Russell Group | — | 8 |
| US Ivy | 0 | 0 |
| Medicine | — | 0 |
Recent coverage
Halcyon London International School achieved an average International Baccalaureate (IB) Diploma score of 35 in 2025, surpassing both UK and global averages. Notably, 24% of students scored 40 or above, and two graduates attained the highest possible score of 45. In April 2026, the school announced plans for a new rooftop garden project, aiming to create an outdoor learning and community space overlooking the Marylebone area.
Open-day dates not yet published
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How well does Halcyon London International match?
Tell us your child's age, location, needs and entry point. We'll score commute, academics, support, budget and culture against schools in Westminster.
Check fit for my childApplication timeline
1 of 6 admissions stages have confirmed dates. Save this school to be notified when dates are published.
| Year | Opens | Closes | Reply by | Status |
|---|---|---|---|---|
| 2026-27 | 1 May 2024 | 15 Oct 2025 | TBC | Closed |
Open events
Private tours and additional visits available by arrangement — contact admissions to arrange.
Fees
Bursaries & Scholarships
Excerpts
“Each student has a learning mentor, who stays with them throughout, and holds small-group mentoring sessions weekly.”
Pastoral care, inclusivity & disciplineEach student has a learning mentor, who stays with them throughout, and holds small-group mentoring sessions weekly. Mentoring groups contain one or two pupils from each grade, so the school becomes integrated across the age groups. ‘My kids have Mobile phone policy A clear...
Wellbeing
Safeguarding - Halcyon London International School Skip To Main Content mobile-menu menu-trigger-container Close Menu mobile-search Search Clear Search mobile-main-nav About Us Director's Welcome Our Mission Board of Trustees Our History Our Community Our Facilities Join Our Team Academics Our Philosophy IB Middle Years Programme IB Diploma Programme Subject Areas Additional Educational Needs IB Diploma Results Admissions Arrange a Visit Entry Requirements and Applying Fees Financial Support Testimonials FAQs Bridge Scholar Bu
Inspection
Isi — 22 Oct 2024
One inspection report on file. Worth reading before booking a visit — covers safeguarding, leadership and overall standard.
Term dates 2024-25
Feeder schools
Policies & documents
Schools like Halcyon London International School
Ranked by semantic similarity across curriculum, ethos, intake and admissions style. Most parents shortlist 4–6 schools before applying.
Questions parents ask
Common questions about Halcyon London International School, answered from this school’s structured profile data. Always confirm specifics with admissions before applying.
What kind of child is Halcyon London International School best for?+
Independent co-ed senior school in Westminster for ages 11–18. Selective entry, top-tier London fees.
How does admissions work?+
Admissions are selective — expect an entrance assessment at the relevant entry point. Plan tutoring or familiarisation early. See the admissions timeline above for confirmed dates.
Are fees published?+
Yes — see the Fees table further down the page. Add extras (uniform, trips, lunches, music tuition, registration fees) on top of the base figure before budgeting.
Does the school support SEND?+
Some SEND provision is documented in our profile, but specific conditions supported aren't itemised. Contact admissions for details before applying.
Are there open days?+
1 upcoming open day or tour — see the admissions timeline. Booking is usually required.
How do I contact admissions?+
email at join@halcyonschool.com or phone on +44 3898 366 42. Reference your child's age and intended entry year in the first message.
What similar schools should I compare?+
We've ranked 6 schools by semantic similarity to Halcyon London International School — see the "Schools like Halcyon London International School" grid below. Most parents shortlist 4–6 schools before applying.
Reviews
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