We are Phi


Phi Tuition is a leading tuition provider specialising in teaching Maths, Science and Computer Science at KS3, GCSE, A Level, IB and University level and for Adult learners.

At Phi, we have only one purpose: to inspire our students to achieve the highest level of academic success.

We work with students, families and schools to improve students’ exam performance in science and mathematics. On average, our students receive a grade two levels higher than they had previously been predicted to achieve. Our process focuses on developing the following key attributes:

  1. Our students’ knowledge, so they are able to navigate the subject matter and context.
  2. Our students’ skills, so they learn how to best approach problems and exam questions.
  3. Our students’confidence, so they are able to navigate new challenges with ease.

All of our tutors have superb teaching skills, are passionate about their subjects and are focused on delivering exceptional results for our students and their families.

Meet the members of our core team:

Dr Stathis Stefanidis

Founder & Director, Head of Physics and Mathematics

Dr Stefanidis brings more than 20 years of teaching experience in the public and private sector to Phi Tuition. He holds a First-class degree in Physics, an MSc and a PhD in Nuclear and Particle Physics. He joined the ATLAS team at CERN, where he worked for 10 years until the completion of his doctorate thesis. Having a strong background in computational physics and statistical modelling, his educational interests and research have focused on using simulation tools to teach physics. Dr Stefanidis holds Qualified Teacher Status (QTS) and is an active member of the Institute of Physics (IoP), the Royal Statistical Society (RSS) and The Tutors’ Association (TTA).

Mr Simon Berrie

Head of Chemistry and Biology

Mr Berrie has always had an interest in science and this led him to eventually achieve an MSc in Chemistry with Industrial Experience from the University of Bristol. After finishing his degree he trained at the Institute of Education in London to gain a PGCE in Secondary Education. During this time, Simon taught in a range of schools across London before gaining a teaching post at Ashcroft Technology Academy in Wandsworth. Mr Berrie spent three years teaching science to students aged 11 to 16, and A Level and IB Chemistry to post-16 students. Since then, Mr Berrie has been a successful tutor to students across all age groups and subjects.


Mrs Sarah Dudney

Consultant, Client Care & Communications

Mrs Dudney works as a consultant for Phi Tuition overseeing client care and client communication. She has a background in the City of London, working in executive search. She is currently studying part time for a MSc in Psychology. She is a graduate of the University of Edinburgh.

Express your interest now – send us a message with the form below

As our classes fill up early and our tutors are quickly booked up, we strongly advise that you get in touch as soon as possible to avoid disappointment. Express your interest now by filling in the form below or calling us on 020 3286 3480:

Please enter your message below, providing any information or questions you wish, for example current predicted grades, any areas of concern, preferred dates etc.