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
    Hong Kong dissidents fear China’s hand in campaign of intimidation and attacks in UK

    British-based activists reveal a rise in violence and harassment – and say police are ignoring their concerns

    Sun, 29 Mar 2026

  • Alexi Mostrous
    Can AI write a Booker prize-winning novel?

    For years, we’ve worried AI will take over junior-level jobs. But a new experiment with Anthropic’s creative chatbot has put celebrated authors on notice

    Fri, 20 Mar 2026

  • Alexi Mostrous
    Sibling revelry: DoJ files suggest Ghislaine not the only Maxwell who took Epstein cash

    The disgraced financier showered millions of dollars on his money-obsessed former girlfriend. But did her sister and her sister’s husband also benefit from his riches?

    Sun, 8 Mar 2026

  • Alexi Mostrous
    The Epstein Files: citizen sleuths examine $1.6bn in financial transactions

    Citizen sleuths are dissecting Epstein’s money trail, picking up where official scrutiny appears to have stalled

    Tue, 3 Mar 2026

  • Alexi Mostrous
    Watching JeffTube: the thousands of audio and video files recorded by Jeffrey Epstein

    Beyond the Epstein files, there are the tapes: thousands of recordings – many of private conversations

    Tue, 24 Feb 2026

  • Alexi Mostrous
    King grants police access to all files, despite courtiers’ cover-up fears

    Palace officials worry that opening up documents for investigation could reveal that senior royal staff turned a blind eye to the former prince’s activities

    Sat, 21 Feb 2026

  • Alexi Mostrous
    ‘The breadcrumb to the larger dinner’: calls mount to widen scope of Andrew investigation

    The Met are carrying out ‘initial inquiries’ into the former prince’s close protection officers as Epstein survivors insist this must be only the beginning

    Fri, 20 Feb 2026

  • Alexi Mostrous
    Epstein files detail ‘Andrew for access’ plans of his ultra-wealthy friends

    Mountbatten-Windsor ‘fed information to his contacts while touring the world at taxpayers’ expense as trade envoy’

    Thu, 19 Feb 2026

  • Alexi Mostrous
    Cash rules everything in the age of money laundering

    Oliver Bullough’s Everybody Loves Our Dollars reveals the criminal tactics and human impact of the shadow economy

    Thu, 12 Feb 2026

  • Alexi Mostrous
    Ghislaine’s riches came from her father, and another fortune from Epstein

    A confidential report by JP Morgan released as part of the Epstein files says inheritance is the main source of her mysterious wealth

    Sun, 8 Feb 2026

  • Alexi Mostrous
    I told a chatbot I was a teenager. Here’s the toxic dating advice it gave me

    The Observer investigates the custom GPTs being modelled on controversial figures of the manosphere, such as self-proclaimed misogynist Andrew Tate

    Thu, 5 Feb 2026

  • Alexi Mostrous
    ‘Choke her lightly’: A chatbot’s dating tips for boys

    Posing as a child, our reporter was given disturbing advice by a ChatGPT-hosted bot that mimics Andrew Tate

    Sun, 1 Feb 2026

  • Alexi Mostrous
    Here’s Johnny! The return of a Hollywood star too big to cancel

    After a spectacular fall from grace, Johnny Depp will play Scrooge – a cruel man forced to reckon with his past. This is the inside story of a startling comeback

    Mon, 15 Dec 2025

  • 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
    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
    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
    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
    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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