Photo of Alexi Mostrous
Alexi Mostrous

Head of Investigations

Alexi Mostrous worked at The Times and at the Guardian for 13 years in roles including Head of Investigations before joining Tortoise Media as a partner in 2019. He has won awards including News Reporter of the Year, Scoop of the Year, and Technology Reporter of the Year. Mostrous is the host of hit podcasts including Sweet Bobby, Hoaxed and Who Trolled Amber. Before journalism, he was a barrister.

Photo of Alexi Mostrous

Alexi Mostrous

Head of Investigations

Alexi Mostrous worked at The Times and at the Guardian for 13 years in roles including Head of Investigations before joining Tortoise Media as a partner in 2019. He has won awards including News Reporter of the Year, Scoop of the Year, and Technology Reporter of the Year. Mostrous is the host of hit podcasts including Sweet Bobby, Hoaxed and Who Trolled Amber. Before journalism, he was a barrister.

  • Alexi Mostrous
    The academics who stuck by financier to the end – and those who didn’t

    According to newly released emails, a group of thinkers kept ties with the tycoon long after most cut them. One even recommended a book ‘similar’ to Lolita

    Sun, 16 Nov 2025

  • Alexi Mostrous
    Jury trials might be scrapped

    David Lammy has proposed scrapping jury trials in England and Wales for all but the most serious offences. Paramount Global has obtained exclusive streaming rights to the UEFA Champions League - a move that could redefine how football fans follow the sport in the future. Revelations that MAGA-supporting accounts on X are operated from countries like North Macedonia, Pakistan and Poland raise concerns about foreign-driven influence and its impact on political discourse.   Giles Whittell is joined by The Observer's Head of Investigations Alexi Mostrous, sports reporter Jessy Parker Humphreys, and journalist, author, and presenter Jenny Kleeman as they compete to pitch the day's top stories.   While we've wrapped up our live editions of The News Meeting for 2025, keep checking https://observer.co.uk/our-events if you'd like to join us at recordings in 2026.   **We want to hear what you think! Email us at: newsmeeting@observer.co.uk  Follow us on Social Media:  @ObserverUK on X  @theobserveruk on Instagram and TikTok @theobserveruk.bsky.social‬ on bluesky    Host: Giles Whittell   Producer: Amalie Sortland and Poppy Bullard   Executive Producers: Matt Russell and Rebecca Moore    To find out more about The Observer:   Subscribe to TheObserver+ on Apple Podcasts for early access and ad-free content Head to our website observer.co.uk  Download the Tortoise app – for a listening experience curated by our journalists  

    38 min • S1, E290

  • Alexi Mostrous
    Who trolled Virginia Giuffre?

    As Ghislaine Maxwell awaited trial, an anonymous account posted more than 1,200 messages criticising her accuser

    Sun, 26 Oct 2025

  • Alexi Mostrous
    Why Republicans released Epstein emails

    Marjorie Taylor Greene, the ultra-Trumpian Republican congresswoman from Georgia, is one of the four Republican dissenters who support the full release of the Epstein files. Listen to Alexi Mostrous discuss the Epstein emails in more detail on The News Meeting podcast. Host: Tomini Babs Writer & Producer: Amalie Sortland Episode Photography: Sofia Fenton Executive producer: Rebecca Moore

    9 min • S1, E1234

  • Alexi Mostrous
    Pro-Russia hackers declare war on Britain

    In messages exchanged with The Observer, a pro-Russian hacking group pledges to disrupt UK businesses and infrastructure

    Sun, 19 Oct 2025

  • Alexi Mostrous
    Donald Trump and the Epstein emails

    Twenty thousand documents from the estate of convicted sex offender Jeffrey Epstein have been released. Could emails referencing Donald Trump divide his loyal MAGA base? Has a No. 10 briefing warning backbenchers about a possible coup exposed a vulnerability in Keir Starmer's leadership? And Donald Trump has threatened to sue the BBC for $1 billion, but is that even possible?   Giles Whittell is joined by The Observer's Alexi Mostrous, Chloe Hadjimatheou and Poppy Bullard, as they battle it out and pitch the top stories of the day.   

    30 min • S1, E286

  • Alexi Mostrous
    Kennedy allies set to profit on results of Trump drug tirade

    In linking rising levels of autism to Tylenol taken in pregnancy, president opens the door to retailers of alternative remedies

    Sun, 28 Sept 2025

  • Alexi Mostrous
    Trump’s war on painkillers

    An investigation from The Observer has found there's a financial link between RFK Jr. and supplement companies that market alternatives to Tylenol.   Host: Tomini Babs Writer & Producer: Amalie Sortland, with reporting by Alexi Mostrous Episode Photography: Sophia Fenton Executive producer: Rebecca Moore

    10 min • S1, E1200

  • Alexi Mostrous
    BP is turning back to petroleum – and away from greener pastures

    In 2020, BP told the world that it cared about climate change. Today, it is doubling down on oil and gas. How did an aggressive US hedge fund help pressure Britain’s best-known energy company to abandon its green ambitions?

    Sun, 7 Sept 2025

  • Alexi Mostrous
    The Salt Path controversy: behind the scenes

    In this special episode, Giles Whittell is joined by Chloe Hadjimatheou, the journalist behind the The Observer's reporting on the bestselling memoir The Salt Path, and her editor, Alexi Mostrous, to discuss how the investigation unfolded. **Join us at the News Meeting Live** LIVE from the Observer Newsroom on Tuesday 29th July – with ITV News presenter Charlene White. Follow us on Social Media: @ObserverUK on X @theobserveruk on Instagram and TikTok @theobserveruk.bsky.social‬ on bluesky Host: Giles Whittell, Deputy Editor Producer: Poppy Bullard Executive Producer: Rebecca Moore

    31 min • S1, E249

  • Alexi Mostrous
    They were humbled by Hamas. Now Israel’s resurgent spy agencies have Iran truly spooked

    Caught off guard on 7 October, Mossad last week took the fight to an enemy it knows well. Alexi Mostrous, head of investigations, explains how intelligence agents recovered so rapidly

    Sat, 21 Jun 2025

  • Alexi Mostrous
    Why is Israel striking Iran?

    OpenAI’s Sam Altman self-publishes chat GPT’s water and energy consumption for the first time, but how can tech companies continue to expand in a more sustainable way? How will RFK Jr’s appointment of known anti-vaxers to the CDC panel shape vaccination policy in the US? And are generational labels a problematic myth? Following Israeli strikes on Iran, The Observer’s Chloe Hadjimatheou and Jess Winch discuss the latest developments in the Middle East. Then, Jess Winch is joined by award winning journalist and best selling author of Empire of AI Karen Hao; plus, The Observer’s Alexi Mostrous and James Tapper, as they battle to pitch the top story of the day.

    44 min • S1, E240

  • Alexi Mostrous
    Russian sabotage squads ramp up attacks to spook the west

    Experts say the government needs to prepare for possible attacks on infrastructure after a string of operations in Europe linked to Russia

    Sun, 4 May 2025

  • Alexi Mostrous
    The other Tate brother

    Tristan Tate is far less well known than his notorious elder sibling, Andrew. But new evidence suggests he holds a central role in their alleged criminality

    Fri, 25 Apr 2025

  • Alexi Mostrous
    The Global Artificial Intelligence Index 2024

    Introducing the Global Artificial Intelligence Index

    Thu, 19 Sept 2024

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