Maddy Diment is a Researcher at Tortoise, working in the Intelligence Team on The Better Food Index and Responsibility100. She studied Geography at Oxford University, and has since worked in consulting, academia and corporate social responsibility.
Maddy Diment
Lead Researcher

“Tortoise is serious about holding power to account. I am convinced that sharp, slow and data-driven analysis is the best way to do that.â€
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Thursday 15 December 2022
The Readout: How do you build a fairer world in an era of polycrisis?Â
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Tuesday 13 December 2022
Sensemaker: A seat at the table
What just happened
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Thursday 17 November 2022
Sensemaker: Footsie falls short
What just happened
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Thursday 17 November 2022
The Responsibility100 Index: The findings
The Responsibility100 Index assesses FTSE 100 companies on their actions and commitments toward a more sustainable future. Here’s what we found in our 2022 update
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Thursday 10 November 2022
The dairy dilemma: what needs to change and why?
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Tuesday 9 August 2022
Wasting time
How the UK’s food giants are missing their food waste targets.
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Thursday 30 June 2022
10 minute readSensemaker Special: The price of chicken
What just happened
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Thursday 30 June 2022
The Better Food Index
Cheaper food doesn’t always mean better food. Products that cost less in monetary terms often have a higher cost elsewhere. The Tortoise Better Food Index – a ranking of food companies based on environmental, health and transparency metrics – aims to make the true cost of what we eat more visible
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Tuesday 28 June 2022
What the food industry isn’t telling us about carbon emissions
Food is the second biggest emitter of manmade greenhouse gases. But many UK food companies don’t reveal the scale of their supply chain emissions.
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Thursday 28 April 2022
10 minute readSensemaker: Anonymous food
What just happened
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Monday 28 November 2022
Big pay for big bosses
The chief executives of the UK’s biggest listed companies have seen their pay soar. On average, they were paid 30 per cent more this year compared to last year. What’s driving the increase?
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Tuesday 19 July 2022
The end of cheap chicken
Chicken is the UK’s favourite meat and that’s partly because it’s cheap. Per kilo it costs less than a pint of lager. But it looks unlikely that prices can stay that low. Why is the cost of chicken rising?