The British Museum has secured a £30 million gift — about $40 million — from a single long-standing supporter, marking one of the largest individual donations in the museum's history and a major advance for its sweeping overhaul of the Bloomsbury building. Museum director Nicholas Cullinan is set to announce the gift at the museum's second annual fundraising ball on 17 October, with the money going directly toward the wider Masterplan rather than the ball's own fundraising total.

The 2026 ball is expected to draw more than 850 guests from across art, fashion, music and culture, and is artistically directed by Es Devlin. Its visual theme is red, chosen as a thread linking three major autumn moments: the loan of the Bayeux Tapestry from France (10 September 2026 to 11 July 2027), the display marking the 250th anniversary of the United States, 'Declaring independence: USA 250' (until 29 November 2026), and an exhibition of 2,000 years of Korean creativity (1 October 2026 to 31 January 2027). Wyclef Jean is headlining in the Great Court. The inaugural ball, dubbed the Pink Ball, raised more than £2 million last year.

At the centre of the Masterplan is the transformation of the Western Range galleries, led by the Lebanese-born architect Lina Ghotmeh. The range covers around 7,500 square metres of displays of antiquities from Egypt, Greece and Rome — including the hall housing the Parthenon Marbles and the gallery with the Rosetta Stone — and the project is intended to rethink how visitors move through the collection with new galleries and new ways of engaging with the holdings. The overhaul is estimated to cost at least £1 billion.

The £30 million contribution builds on earlier fundraising milestones for the scheme, including a £50 million commitment from BP announced in 2023. Hedge fund billionaire Igor Tulchinsky, who has given a reported £5 million toward the Bayeux Tapestry exhibition, is serving as honorary chair of this year's ball. The announcements underline how the museum, under Cullinan, is leaning on philanthropy to drive what it calls the most ambitious transformation in its history.