Where is Southbank International School Westminster located?

Southbank International School Westminster is a secondary school in Westminster (W1B 1QR).

How many pupils attend Southbank International School Westminster?

Southbank International School Westminster has around 487 pupils on roll according to the latest school census data.

How can I compare Southbank International School Westminster with other schools?

View Southbank International School Westminster's full profile on FavSchools for multi-year results and Ofsted history, then use the comparison tool or interactive map to explore nearby alternatives in Westminster.

IndependentData as of May 2026

Southbank International School Westminster

63-65 Portland Place, London, W1B 1QR

Other independent school

Pupils

487

Ages

11-18

Capacity

620

Inspected by ISI, not Ofsted

Since September 2023, ISI no longer awards an overall grade like Good or Outstanding. Read the school's latest report for compliance, significant strengths, and areas for improvement.

Find reports on isi.net

Inspection

ISI inspected

Exam Results

Official performance data from the Department for Education

GCSE Results (Secondary)

Key performance measures— 2024/25

Attainment 8

N/A

Progress 8?

N/A

9-7 Grades

N/A

Basics 9-5

N/A

Trend — Attainment 8 & Progress 8

Progress 8 not available for 2024/25 — DfE cannot calculate it because COVID-19 cancelled this cohort's KS2 SATs (the baseline). Expected to return in 2026/27.

Grade Distribution (%)

DfE school-level GCSE grade distribution is available from 2023/24 onwards; no data for earlier years

How to read Progress 8 vs Attainment 8Two numbers, two different stories. The 6-min explainer for parents.

Community & Reviews

What parents say and who teaches here

Parent Reviews

Location & Nearby

Explore the area and compare alternatives

Data shown for guidance only · confirm details with the school before applying