This is my face.

Dr Hannah Fry is an Associate Professor in the Mathematics of Cities at the Centre for Advanced Spatial Analysis at UCL. She works alongside a unique mix of physicists, mathematicians, computer scientists, architects and geographers to study the patterns in human behaviour - particularly in an urban setting. Her research applies to a wide range of social problems and questions, from shopping and transport to urban crime, riots and terrorism. 

Find out more about CASA and the degree programmes they offer here and more about Hannah's research and publications here.

Alongside her academic position, Hannah is an experienced public speaker giving conference keynotes and taking the joy of maths into theatres and schools. Hannah’s mathematical expertise has led to the development of several BBC documentaries including City in the Sky (BBC2), Britain's Greatest Inventions (BBC2),  Climate Change By Numbers (BBC4), Calculating Ada: The Countess of Computing (BBC4), Horizon: How to Find Love Online (BBC2) and The Joy of Data (BBC4). Hannah regularly appears on radio in the UK including on her long running BBC Radio 4 show The Curious Cases of Rutherford and Fry. You can find the podcasts of that show here. Online, her YouTube videos have clocked up millions of views, including her popular TED talk, The Mathematics of Love.

Hannah’s has also published two popular maths book: The Mathematics of Love: Patterns, Proofs, and the Search for the Ultimate Equation (Simon & Schuster/ Ted) and The Indisputable Existence of Santa Claus (Penguin Random House/Transworld). She is currently working on her third title Hello World (Penguin Random House/Transworld) due to be released worldwide in September 2018.

You can find her on twitter and instagram: @fryrsquared

If you'd like Hannah to come and give a talk please contact


Hello World

 The UK cover

The UK cover

 The US cover

The US cover

So here it is. The thing I've been working on for the past 16 months. Unlike my previous two books, this one closely aligns with my academic research interests. (As hard as it is to believe, no one at Nature took my requests to set up a new journal for Santa Claus related scientific discoveries seriously). This book takes a different tone. It's about the age of the algorithm, the story of a not-too-distant future where machines rule supreme, making important decisions – in healthcare, transport, finance, security, what we watch, where we go even who we send to prison. It's a book that asks how much should we rely on them, and questions what kind of future we want to live in.  I hope you like it. (I tried really really hard). 

It's not out until the 6th September, but you can pre-order on Amazon here for the UK version and here for the US.

Our 2017 Christmas book is here! Now with a fetching new cover, because there's nothing more Christmassy than RED.

And we're ready to answer the big, important questions..

Like, how do you apply game theory to select who should be on your Christmas shopping list ? Can you predict Her Majesty's Christmas Message? Will calculations show Santa is getting steadily thinner - shimmying up and down chimneys for a whole night - or fatter - as he tucks into a mince pie and a glass of sherry in billions of houses across the world?

Because who hasn't always wondered how to set up a mathematically perfect secret santa? Finally we prove once and for all that maths isn't just for old men with white hair and beards who associate with elves.

The book is available from Amazon and Waterstones and has been updated from last year to include an extra chapter (and probably a few less typos).

The Mathematics of Love

I'll be the first to admit that love and mathematics don't seem to fit naturally together. I know - just as well as you do -  that the thrill of romance can't easily be described by a simple set of equations. But that doesn't mean that maths doesn't have anything to offer.  And by picking out big questions that maths is ideally placed to describe,  I hope to persuade you that maths can offer a valuable new perspective on matters of the heart: What's the chance of us finding love? What's the chance that it will last? How does online dating work, exactly? When should you settle down? How can you avoid divorce? When is it right to compromise? Can game theory help us decide whether or not to call? 


The book is available in hardback, ebook and audiobook