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Data and Graphics Editor
Katie is the head of data and graphics at The Observer. While at Tortoise, she led the team of reporters, developers and designers that worked on the award-winning Westminster Accounts project. Previously, she worked at the Wall Street Journal in New York, the Financial Times in London, and the Atlantic in Washington, DC. She’s originally from Chicago, Illinois.

Katie Riley
Data and Graphics Editor
Katie is the head of data and graphics at The Observer. While at Tortoise, she led the team of reporters, developers and designers that worked on the award-winning Westminster Accounts project. Previously, she worked at the Wall Street Journal in New York, the Financial Times in London, and the Atlantic in Washington, DC. She’s originally from Chicago, Illinois.

Why did President Donald Trump postpone his deadline to strike Iranian power plants? How is the Iran war impacting the cost of living in the UK? And is there a pattern to anti-semitic attacks in the UK? To battle out who can pitch the story that should lead the news, Jasper Corbett is joined by The Observer reporter Stephen Armstrong, producer Ada Barumé and Head of Data and Graphics, Katie Riley. Come along to the next The News Meeting LIVE, right in our newsroom, this Thursday at 6:30 pm! Get your ticket at observer.co.uk/our-events. **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: Jasper Corbett Producer: Amalie Sortland Executive Producer: Casey Magloire 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 Observer app – for a listening experience curated by our journalists
29 min • S1, E323

Amid accusations of undemocratic behaviour, unprecedented numbers of amendments are threaten to delay the vote on the right of terminally ill adults to end their life
Sun, 1 Feb 2026

In this special episode looking at the first year of US President Donald Trump's second term: What will the impacts of Trump's cuts to USAID be? How has Trump reshaped global politics? Is Trump's power threatened more by grassroots activism than pushback from institutions? Jeevan Vasagar is joined by The Observer's Deputy Comment Editor, Erica Wagner, Head of Data and Graphics, Katie Riley, and Chatham House's Senior Research Fellow for the Latin America, US and North America Programme, Chris Sabatini. Buy tickets to the next The News Meeting Live on Thursday, the 29th of January HERE **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: Jeevan Vasagar Producer: Amalie Sortland Executive Producer: Poppy Bullard 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 Observer app – for a listening experience curated by our journalists
36 min • S1, E305

Will European countries decide to give billions of frozen Russian assets to Ukraine? What did we learn about Trump's White House from Vanity Fair's 11 months of reporting? How should the government respond to the Palestine Action hunger strikers? Giles Whittell is joined by The Observer's Senior Producer Katie Gunning, Data and Graphics Editor Katie Riley, and Data Reporter Hannah Schuller as they battle it out for the top story of the day. Find the team's must reads: All Cock, No Wok **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: Poppy Bullard Executive Producer: 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 Observer app – for a listening experience curated by our journalists
31 min • S1, E298

Will there be any voter suppression in Tuesday's US elections? Why did a British university prevent one of its academics from researching human rights abuses in China? Are Sudan's rebels using British-made equipment on the battlefield? Giles Whittell is joined by The Observer's Data and Graphics editor, Katie Riley, Senior Audio Producer Katie Gunning, and Senior Researcher Serena Cesareo as they pitch their top stories of the day Must Reads: She Was Ready To Have Her 15th Child. Then The Felony Charges Began. The Great Ghosting Paradox The Cocaine Kingpin Living It Large In Dubai Assata Shakur Obituary **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 Whitell Producer: Poppy Bullard Executive Producer: Jasper Corbett 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
34 min • S1, E284

What do we do with the knowledge that climate change made Hurricane Melissa worse? Why was there such a deadly police raid in Brazil? And why isn't hospice care treated as an essential part of healthcare? Rebecca Moore is joined by The Observer's Data and Graphics editor, Katie Riley, and reporters James Tapper and Rachael Healy, as they pitch their top stories of the day. Must Reads: Some People Can't See Mental Images Political Beliefs Dating App Experiment Premiere League **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: Rebecca Moore Producer: Amalie Sortland Executive Producer: Matt Russel
37 min • S1, E283

A wave of new graduates has taken to social media to complain that entry-level roles are disappearing as AI takes over. The Observer's team analysed the data. Host: Claudia Williams Writer & Producer: Amalie Sortland Episode Photography: Joe Mee Executive producer: Rebecca Moore
9 min • S1, E1210

Why has Donald Trump sent hundreds of National Guards to Illinois? Should the UK look to France when it comes to tackling the far-right? Will the US-backed plan for peace in Gaza work? Rebecca Moore is joined by The Observer's Katie Riley and Poppy Bullard, and David Runciman, Honorary Professor of Politics at Cambridge University and host of the Past Present Future podcast as they pitch their top story of the day. **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: Rebecca Moore Producer: Casey Magloire Executive Producer: Jasper Corbett 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
34 min • S1, E276

Figures show that while competition is tight, it’s the economy not tech that is the cause
Sun, 28 Sept 2025

Will Zelensky find any success with Trump, in the wake of the Alaska Summit? What does the militarisation of Washington DC tell us about America's political direction? And why are MPs making TikToks? Rebecca Moore is joined by the Financial Times' Working It Editor Isabel Berwick, Plus The Observer's Katie Riley and Stephen Armstrong, as each try to pitch the top story of the day.
31 min • S1, E261

Sun, 17 Aug 2025

The top two tech firms are worth twice the rest of the FTSE 100 combined but valuations haven’t turned into revenues
Sun, 3 Aug 2025

Are male novelists a dying breed? Can women trust apps with their personal data? Are tariffs the only way Donald Trump knows how to do diplomacy? Giles Whittell is joined by The Observer's Home Affairs Editor John Simpson, Head of Data and Graphics Katie Riley and Consulting Editor for Comment, Erica Wagner.
33 min • S1, E256

Also in this episode: will plans to overhaul the water companies in England and Wales work? And why is Trump suing Rupert Murdoch?
24 min • S1, E252

Why are TV audiences for women’s sport falling? Was the Nato summit a victory lap for Donald Trump? And who is Zohran Mamdani, the charismatic progressive running for New York City Mayor? Giles Whittell is joined by Katie Riley, data editor at The Observer; Jessica Hayden, The Observer’s assistant sports editor and author of The Red Roses: Behind the Scenes with the England Women’s Rugby Team; and Ivo Daalder, former US ambassador to Nato and foreign policy advisor to President Obama. **Join us at the News Meeting Live: LIVE from the Observer Newsroom on Tuesday 29th July - with Charlene White and Kehinde Andrews Follow us on Social Media: @ObserverUK on X @theobserveruk on Instagram and TikTok @theobserveruk.bsky.social on bluesky Host: Giles Whittell, deputy editor-in-chief at The Observer Producer: Poppy Bullard Executive Producer: 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 If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact hello@tortoisemedia.com
34 min • S1, E245

Is youth mobility on the cards for Labour’s post-Brexit plan with Europe? Why is it so hard to record incidents of spiking? How will Labour’s immigration plan affect international students and higher education? Giles Whittell is joined by Rebecca Myers, Katie Riley and Cat Neilan, as they battle to pitch the top story of the day.
31 min • S1, E231

A few hours before he announced a 90-day pause on tariffs, the president posted “THIS IS A GREAT TIME TO BUY!!! DJT” on social media. Why has this led to accusations he manipulated the market for his own gain? The popularity of companion AI chatbots is rapidly increasing, but what safety nets are in place to protect young people? How have Big Law firms in America reacted to Trump 2.0? Rebecca Moore is joined by Hashi Mohamad, Patricia Clarke and Katie Riley, as they battle to pitch the top story of the day.
37 min • S1, E223

A quarter of the members of the UK’s House of Lords do two-thirds of the work, Tortoise has found
Wed, 20 Nov 2024

The fact that all of this data was already public meant that collating it all couldn’t be that hard, right? Wrong. Very wrong
Sun, 8 Jan 2023