Heritage & Culture · Other cultural venue

British Library St Pancras Extension

The British Library’s St Pancras extension combines new public library facilities with commercial space in London’s Knowledge Quarter.[1]

Current position

A groundbreaking ceremony on 21 September 2026 marked the formal start of works on the extension. Delivery is expected in 2032.

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Benefits

Approximately 100,000 square feet of new library space and 600,000 square feet of offices are planned.

Latest developments

Heritage & Culture · 21 September 2026

Construction begins on British Library St Pancras extension

Mitsui Fudosan and architect RSHP confirm the formal start of works on the 700,000 sq ft extension. The scheme will add library facilities and commercial research space, with completion expected in 2032.

Sources

ft.com ↗
mitsuifudosan.co.uk ↗
rshp.com ↗