BP's 4.3% share slide after chairman's ousting reopens governance questions over the North Sea major

BP's 4.3% share slide after chairman's ousting reopens governance questions over the North Sea major BP fired chairman Albert Manifold for "unacceptable" conduct, sending shares down 4.3% and unsettling investors already wary after years of strategic drift. BP fired its chairman Albert Manifold with immediate effect on 26 May (2026-05-26), citing "serious" and "unacceptable" concerns over governance, oversight and conduct, and the shares fell 4.3% to 527.4 pence by 4:12 p.m. in London.^5,6 A board does not remove its own chairman months into the job without a problem it cannot manage internally. Manifold had taken the chair only in July last year (2025-07), replacing Helge Lund, and the board said it acted unanimously. For a company that has spent the past two years trying to convince investors it has a steady hand, the dismissal of the person meant to provide that steadiness is its own signal.^5,6 The market read it as instability rather than housekeeping. A 4.3% one-day drop in a major's shares on a governance event, not an operational one, tells you investors had little buffer of confidence to draw on.⁶ The backdrop matters for how the move lands. At BP's 2025 annual general meeting, Lund drew a near 25% vote against his re-election as shareholders pulled in opposite directions over the company's climate strategy. Manifold's own predecessor had survived, but barely.⁵ Reporting since the ousting has filled in the personal dimension. The Wall Street Journal, citing people familiar with the matter, said Manifold had clashed with a fellow board director and held a fractious relationship with chief executive Murray Auchincloss in the months before his dismissal during the week of 25 May (2026-05-25).⁷ This is a company that has form on the abrupt removal of senior figures. Former chief executive Bernard Looney forfeited around £32.4 million in remuneration after his own departure. A board that has now cycled through that turmoil and a contested chair vote is not projecting the stability a capital-intensive oil major needs to attract patient money.⁵ The timing is awkward against the wider state of the basin BP helped build. Britain's North Sea is in long decline, and the politics around it are unsettled. At 78%, the United Kingdom's effective tax rate on production is among the highest in the world, deterring investment in a basin that already carries high production costs, the Economist noted.³ That fiscal weight frames why a leadership wobble at one of the basin's anchor operators carries beyond BP's own share register. North Sea revenues once peaked at 3% of GDP in the mid-1980s; the windfall underwrote a generation of British economic policy. The decline is structural, and critics' talk of a renaissance is, in the Economist's assessment, fanciful.³ While BP wrestles with its boardroom, others are moving on the asset side. Equinor and Aker BP signed a collaboration agreement in May that includes an exchange of interests in the North Sea and Barents Sea, seeking alignment across the Norwegian continental shelf.⁴ Norway, meanwhile, is adding supply. Its energy ministry approved development plans on 19 May (2026-05-19) to reopen the Albuskjell, Vest Ekofisk and Tommeliten Gamma gas fields in the southern North Sea in 2028, three decades after they last produced. Operator ConocoPhillips told Montel production should start in the fourth quarter of 2028 at 5.7 million cubic metres a day, around 1.5% of average daily demand, with the fields expected to yield 90-120 million barrels of oil equivalent on roughly EUR 1.8bn of investment.¹ That contrast is the uncomfortable part for British policymakers. Provisional figures suggest Norway supplied nearly 70% of Britain's gas imports in 2025, and the two countries are deepening ties, from a £10bn frigate deal to shared offshore-wind ambitions, leaving the UK increasingly dependent on its neighbour for both molecules and electrons.² None of this changes BP's production overnight. Yet for a major whose investment case already rested on disciplined execution, a chairman removed for conduct reasons hands sceptical shareholders fresh ammunition. The unresolved question is who BP installs next, and whether that person can hold a fractured board together long enough to settle the strategy.^5,7 Watch the appointment, and watch the next shareholder vote. With Lund having scraped through at 25% against and Manifold gone within a year, a third contested chair contest would tell investors the problem sits with the board, not the individual.^5,7