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Southbank International School Westminster
63-65 Portland Place, London, W1B 1QR
Independent school for ages 11–18 in London. Mixed intake.
Southbank International School Westminster is a mixed independent school in Westminster, London, for ages 11 to 18, with a sixth form.
Its ISI inspection in November 2025 found the relevant standards and safeguarding standards met.
The school describes itself as an International Baccalaureate school across central London campuses, with an approach intended to develop critical thinking, curiosity and an international outlook.
Ages 11–18 · Secondary age
487 pupils · On roll
Independent school · Mixed