# Halcyon London International School

Halcyon London International School is a school for ages 11 to 18 in London, Westminster, with 157 pupils.

## Term dates


We do not yet hold term dates for Halcyon London International School. This establishment sets its own term dates rather than following the local authority calendar.

## Facts

- **URN:** 139415
- **UKPRN:** 10040842
- **Type:** Other independent school
- **Ages:** 11–18
- **Pupils:** 157
- **Capacity:** 230
- **Local authority:** Westminster (https://schooldates.co.uk/council/westminster)
- **Address:** 33 Seymour Place, London, W1H 5AU
- **Coordinates:** 51.515563, -0.161764
- **Website:** https://www.halcyonschool.com
- **Opened:** 13 March 2013

## Provenance

- **Source:** Get Information about Schools (GIAS), Department for Education
- **As at:** 1 September 2026
- **Canonical page:** https://schooldates.co.uk/school/halcyon-london-international-school

## Licensing

Contains public sector information licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right. We do not publish head teacher names or any other personal data.