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How ‘mega-donors’ are buying political influence... and your algorithm

Published 21 Aug 2026with Beth Rigby, Ruth Davidson & Harriet HarmanListen to the episode ↗

This episode of Electoral Dysfunction takes a summer-recess deep dive into how UK political parties are funded, tracing a shift from modest, rule-bound donations towards an era of mega-donors and multi-million-pound gifts. Investigative journalist Peter Geoghegan walks through the mechanics of party funding, the growing reliance on wealthy individuals rather than trade unions or mass membership, the rise of corporate donation vehicles that obscure true donors, and the largely unregulated world of online and social-media campaigning, including concerns about foreign interference and disinformation. Former attorney general Dominic Grieve then discusses a reform package he co-authored aimed at tightening transparency around unincorporated associations, capping donations, reforming House of Lords appointments and strengthening the Electoral Commission's enforcement powers, while arguing the current government's response has been too limited.

Throughout, the hosts weave in personal anecdotes, Harriet Harman's experience avoiding donations during a leadership run, and Ruth Davidson's memories of the Wendy Alexander donation scandal, to illustrate how thresholds for scandal have shifted dramatically as donation sizes have grown. Figures cited range from historic donation norms and postage costs for campaign leaflets to specific mega-donations, fine levels for breaching election law, and estimates of how concentrated party funding has become among a small number of super-donors.

Key points from the discussion

The points they raised, and the official data behind them.

  • The hosts recalled that Wendy Alexander, then Scottish Labour leader, was brought down after accepting a £950 donation from a Jersey-based donor during her leadership campaign.

    ~00:50

    Context

    Wendy Alexander led Scottish Labour and resigned in 2008 after admitting an impermissible donation from a Jersey resident was recorded in her leadership campaign accounts, breaching rules that donations must come from UK-registered sources. The Electoral Commission investigated and she stepped down citing the seriousness of the breach despite it being found unintentional.

  • The hosts pointed out that political donations now regularly reach £1 million, £2 million, £5 million and even £10 million, illustrating how far donation sizes have escalated.

    ~01:01
  • The journalist guest estimated that total political donations for the 2025 general election period were around £50 million.

    ~13:07
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  • The guest said total donations at the 2024 general election reached about £123 million, a large real-terms rise even accounting for inflation.

    ~13:07

    Context

    The Electoral Commission publishes a public register of political donations and loans reported by UK parties and campaigners above statutory thresholds. Figures for general election years capture reported donations during the regulated campaign period.

  • The guest said that in 2023 around two-thirds of all private political donations in the UK came from just 19 wealthy individuals.

    ~14:31

    Context

    Campaigners and researchers have tracked a rising share of UK political funding coming from a small number of very wealthy 'mega-donors' rather than from mass party membership or trade unions, a shift documented through the Electoral Commission's donations register.

  • The guest referenced the recommendation by former civil servant Sir Philip Rycroft for a £100,000 cap on donations from British citizens living abroad, which the government accepted.

    ~15:53

    Context

    Sir Philip Rycroft, a former senior UK civil servant, was commissioned by the Starmer government to review foreign interference in British politics following the conviction of former Reform UK Wales leader Nathan Gill. His review proposed tighter controls on donations from UK citizens resident overseas, which the government has said it will implement through the Elections Bill.