I was an undergraduate and postgraduate student at Trinity College, Cambridge (whose alumni include Newton, Byron, Bacon, Tennyson, Thackeray, Maxwell, Babbage and A. A. Milne) then spent two years as a College Lecturer at St Catherine's College, Oxford (whose alumni include Benazir Bhutto, Peter Mandelson, Richard Herring and Emilia Fox) where I was also a member of the Oxford Centre for Industrial and Applied Mathematics. But since 1998 I have been a Fellow of Christ's College, Cambridge (whose alumni include Milton, Darwin and Ali G) where I am the Director of Studies in Mathematics as well as a Tutor, having been the Senior Tutor from 2008 until 2023. I am also a Lecturer in applied mathematics at the University of Cambridge.
I am passionate about education, in all subjects but especially in mathematics. I am enthusiastic about the public understanding of mathematics, regularly giving outreach talks to schools and adults alike. My main academic interests are in the applications of mathematics to the real world. In my spare time I like to dance, play the piano, walk, and get involved with musical theatre.
I am the Director of Studies in Mathematics at Christ's College in the University of Cambridge, with responsibility for the College's teaching provision in mathematics, admissions interviewing of undergraduate applicants, and selection of postgraduate applicants. I teach undergraduate mathematics students at the College personally, mostly in applied mathematical topics, and advise them on course options. More information on admission to the College to study mathematics can be found in the section below.
I am also a Tutor at the College, which means that I have responsibility for the pastoral care and welfare of a group of students who are not mathematics students.
Finally, I am a Lecturer in the Department of Applied Mathematics and Theoretical Physics (DAMTP), part of the Faculty of Mathematics in the University of Cambridge. My research interests are listed in the section below.
Previously, I held the following posts:
Christ's College is a particularly friendly and high-achieving College of the University of Cambridge, with outstanding strength in mathematics. Its alumni include Charles Darwin, John Milton and Ali G. As Director of Studies in Mathematics at Christ's College I interview all candidates for undergraduate admission to the College in mathematics. Details of the application process, including information about the University course, the College Fellows, Open Days, interviews and offers can be found here. More general information about applying to Christ's as an undergraduate, including details of Open Days, can be found here.
The application process for postgraduate students (Master's and PhD) is different and is described here.
At the turn of the millennium, I was involved in the design and production of the Newton Institute's contribution to World Mathematics Year 2000: the Posters in the London Underground project. This series of 12 posters about the relevance of mathematics to the real world was displayed month by month in trains on the Tube, but ever since then the posters have gone from strength to strength, winning awards, starring in films including Agent Cody Banks and The Perfect Man, and even appearing on TV in Dawson's Creek and Dr Who. Long after the original poster project finished, the Newton Institute continues to receive regular requests for reprints from schools and Universities world-wide, and the posters have been reprinted several times. The original posters are available from the Mathematical Association.
The Treasury Select Committee has asked me on several occasions for advice on the charges made by credit card providers and ways to improve transparency and competition in the credit card market. I have been interviewed on BBC2, Radio 4 and in many national newspapers about this topic.