Halcyon London International School
London · W1H 5AU
Halcyon London International School is a day-only independent school in central London (W1H 5AU, near Marble Arch) offering the IB curriculum to a small, internationally minded cohort of approximately 187 pupils. The school emphasises an inquiry-based philosophy, positioning itself as a forward-thinking IB specialist with a welcoming, inclusive ethos. Its central location, modern facilities, and focus on global citizenship appeal to affluent international and UK families seeking an alternative to traditional English independent schooling.
- →IB curriculum throughout (MYP and Diploma) rather than English GCSEs/A-Levels, valued by internationally mobile families
- →Prestigious central London location with excellent transport links and urban cultural access
- →Small school size (187 pupils) enabling personalised attention and strong pastoral care
- →Explicit commitment to diversity, inclusion, and welcoming families from varied backgrounds
- →Modern facilities and contemporary educational philosophy focused on critical thinking and inquiry
Who thrives here
Pupils from international or globally minded families seeking a non-traditional, inquiry-led curriculum; families committed to the IB pathway; academically curious students who thrive in smaller, collaborative learning environments; families who prioritise cultural diversity and inclusive values.
Strengths at a glance
Percentiles within UK independent + grammar schools we track.
At a glance
Contact & visit
33 Seymour Place
London
W1H 5AU
Nearest stations
Frequently asked questions
What are the fees at Halcyon London International School?
Day fees at Halcyon London International School are approximately £34,200 per year (2025/26).
How do you get into Halcyon London International School?
Halcyon London International School admits pupils at 11+, 13+, 16+. Entry is assessed by Interview, Assessment. See the Admissions section above for open days and key dates.
Is Halcyon London International School a boarding school?
Halcyon London International School is a day school in London and does not offer boarding.
What is Halcyon London International School's latest inspection rating?
Ofsted rated Halcyon London International School “Outstanding” (2020).
What parents say
Frequently praised
✓Welcoming, inclusive culture celebrating diversity and individual student potential
✓IB curriculum offering genuine intellectual rigour and inquiry-based learning rather than rote English schooling
✓Small school enabling strong relationships between staff and pupils, personalised support
✓Excellent central London location with access to cultural and educational opportunities
✓Modern, contemporary educational philosophy aligned with global mindedness
Common concerns
!School not yet Ofsted inspected, so no independent quality assurance in public domain
!Small cohort size may limit breadth of extracurricular offer, competitive sport opportunities, or peer diversity in some areas
!Limited public data on destinations, university outcomes, or specific academic results
!IB curriculum may be less familiar to UK-based families or those seeking traditional A-Level pathway
!Annual day fees not published; likely premium pricing for central London location