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Term datesHalcyon London International School

London • W1H 5AULocal authority: Westminster

These are Halcyon London International School's own term dates for 2026/27 — read from halcyonschool.com. The school hasn't published 2025/26 yet, so those years are filled from Westminster council's calendar: term dates and holidays, but not the school's own training days, usually five a year. Expect a few extra closed days. We re-check every few days and swap in the school's dates the moment they appear.

How we read these
  1. 1Opened the term-dates page on halcyonschool.com.
  2. 2Read the dates off the page with our language model.
  3. 3Kept 12 dates of the school's own for 26/27; 25/26 is Westminster council's dates until the school publishes its own — and we re-check every few days, so they stay right on their own.

See the full trace — every date, back to the sentence it came from →

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Summer Holiday now

Back to school Wed 2 Septin 6 days

First day off after that: INSET Day · Mon 21 Sept in 3½ wks

Days off · 2025/2026

Today

Summer Holiday

back to school Wed 2 Sept

in school · 2½ weeks

Days off · 2026/2027

INSET Day

in school · 5 weeks

October Half Term

back to school Mon 2 Nov

in school · 6 weeks · last day Fri 11 Dec

Christmas Holiday

back to school Tue 5 Jan

INSET Day

in school · 6 weeks

February Half Term

back to school Mon 22 Feb

in school · 4½ weeks · last day Wed 24 Mar

Easter Holiday

back to school Mon 12 Apr

in school · 3 weeks

Early May Bank Holiday

in school · 4 weeks

Spring Bank Holiday

in school · 4½ weeks · last day Thu 1 Jul

Summer Holiday

Halcyon London International School term dates at a glance

When does Halcyon London International School go back?
Halcyon London International School returns on Wednesday, 2 September 2026.
When does Halcyon London International School break up for Summer?
Halcyon London International School breaks up on Monday, 20 July 2026, the Summer Holiday runs from Tuesday, 21 July 2026 to Tuesday, 1 September 2026 and pupils return on Wednesday, 2 September 2026.
When does Halcyon London International School break up for October Half Term?
Halcyon London International School breaks up on Friday, 23 October 2026, the October Half Term runs from Monday, 26 October 2026 to Friday, 30 October 2026 and pupils return on Monday, 2 November 2026.
When does Halcyon London International School break up for Christmas?
Halcyon London International School breaks up on Friday, 11 December 2026, the Christmas Holiday runs from Monday, 14 December 2026 to Monday, 4 January 2027 and pupils return on Tuesday, 5 January 2027.

Checked against the school's own page on .