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Halcyon London International School
Westminster·Not applicable·London·Other independent school·W1H 5AU
URN: 139415
n/a
Attainment 8
National avg ≈ 46.4 · 2024/2025
n/a
Progress 8
No published value in available years
n/a
5+ Eng & Maths
Grade 5+ in both · 2024/2025
n/a
EBacc entry
% entering EBacc · 2024/2025
Decision summary
This summary combines published school data and is designed to help you decide what to check next. It does not guarantee a school place or replace official admissions guidance.
Academic outcomesAcademic data not assessed
Academic signal is not available for this school phase in our current dataset.
Pupil progressLimited progress data
No Progress 8 data is available for this school in the years we hold.
Admissions realismAdmissions realism: not yet assessed
Admissions realism depends on your home postcode and the school's published allocation data. Enter your postcode on this page to get a more specific assessment, and always verify the latest policy on the school's official admissions page.
Watch-outs
- Small cohort (27 pupils in the latest results year). Figures may be less reliable and some data may be suppressed.
Next actions
- Verify the school's official admissions policy
- Book an open day or school visit
- Add this school to your shortlist and compare with backup options
Performance over time
Attainment 8 over time
Independent School Entry
Only source-backed entry information found on the school's own website is shown below.
Verified fees
Year 7
£32,598
Fee evidence
ISC day fees/term (excl VAT): £10,866 to £11,360 -> £32,598/yr (x3)
Verified exam details
Exam type
CAT
Exam provider
GL Assessment
Open days from the school website
Visit us in Marylebone, at the beating heart of central London
Entry requirements
Connected to university admissions offices around the world, our University and Careers Counselling Director brings specialist knowledge to Halcyon that creates college- and career-ready global citizens
Verification
Data year
2026
Last verified
12 Apr 2026
Confidence
50%
Pages checked
1
Historical results
| Year | Pupils | Att8 | P8 | 5+ E&M | EBacc % | EBacc APS |
|---|---|---|---|---|---|---|
| 2024/2025 | 27 | — | — | — | — | — |
| 2023/2024 | 28 | — | — | — | — | — |
| 2022/2023 | 25 | — | — | — | — | — |
| 2021/2022 | 30 | — | — | — | — | — |
School information
| URN | 139415 |
| Local authority | Westminster |
| Region | London |
| Phase | Not applicable |
| Type | Other independent school |
| Gender of entry | Mixed |
| Age range | 11-18 |
| Headteacher | Director Jeffrey Lippman |
| Trust | — |
| Admissions | Not applicable |
| Religious character | None |
| Postcode | W1H 5AU |
| Latest pupils | 27 |
| FSM eligible | — |
Contact and identifiers
33 Seymour Place, London, W1H 5AU
www.halcyonschool.comView local authority page2072581169| DfE number | 6001 |
| UKPRN | 10040842 |
| Opened | 13 Mar 2013 |
| GIAS updated | 2 Feb 2026 |
Data sources and freshness
| Official record updated | 2 Feb 2026 |
| Latest KS4 year | 2024/2025 |
| Latest KS2 year | — |
| Ofsted published | — |