Our team

Hamilton is made up of a small but dedicated team of staff members, who work with our specialist subject consultants and writers to produce and publish plans used across the world.

Mike O'Regan
Mike O'Regan

Mike founded Hamilton Trust in 1988, and he continues to provide executive support and direction. After graduating in Economics from Cambridge, Mike travelled, worked on the shop floor and taught for two years before co-founding RM in 1973. He continued as an executive director until 1992, when he moved to a non-executive role, whilst also being closely involved with a number of other digital technology companies.

Mike has been a long-standing trustee of a number of Oxford-based educational charities, including as co-founder of Peeple (née PEEP), and periods spent as a governor of The Oxford Academy, Oxford Brookes University and, still, Pegasus School. He was awarded an honorary degree by Oxford Brookes University in 1999 and by the Open University in 2002. He received an OBE in the Queen’s Birthday Honours in 2000.

Ruth Merttens
Professor Ruth Merttens

Professor Ruth Merttens oversees all of the educational projects and materials at Hamilton, as well as developing new initiatives.

Ruth was heavily involved with the development of the National Numeracy Strategy, particularly in the development of training materials. She also co-authored Abacus, the UK’s number one primary maths scheme and continues to work closely with Pearson. On top of all this, Ruth still teaches one day a week in her local primary school.

Ruth passionately believes that most teachers do an amazing job and need to be left alone to get on with it and that the need to monitor schools and assess children should most definitely not be the drivers of what happens in the classroom. She is of the opinion that we have in Britain a unique brand of liberal primary education which fits children for their role in an open democracy in the 21st century.

Ruth’s training sessions have long been in high demand, and she travels far and wide on behalf of Hamilton offering training to clusters of schools and teachers who want to focus on improving maths teaching and learning.

Claire Field

Claire spent seven years as a primary school teacher before running the education programme at the Roald Dahl Museum. Claire’s experience in education both in and outside the classroom informs her work here at Hamilton. She co-ordinates the publication of our high-quality planning and resources and enjoys working to help make teachers’ lives easier.

Diana Mitcham
PA to Ruth Merttens

A long standing member of the Hamilton team, Diana is PA to Prof. Ruth Merttens. Everyone in the office loves it when it's Diana’s turn on the cake rota and we are working hard to encourage her to sign up to the next series of the Great British Bake off.

Jeanette Viney
Hamilton Education Manager

Jeanette IS Hamilton Education! Working closely with Hamilton Trust, she deals with invoicing, book orders and all things money related. Jeanette spends a lot of time educating young people through her scouting role and can often be found creating new and exciting games in her lunch hour.

Karen Edwards
Digital Resources Manager

Karen looks after the schools and teachers who use the Hamilton website and answers all of their questions about it. When she was at school she loved finding hidden treasures in the school library.

Lisa Pocock
Lisa Pocock
Publishing Assistant

An honours graduate in biochemistry, an experienced medical writer and practising Teaching Assistant, Lisa is amply qualified to fulfil the demanding role of publishing assistant. Lisa publishes across the full range of Hamilton's teaching and learning resources; as the final person to see those materials pre-publishing, the buck stops with her!

Nick Barwick
Nick Barwick
Maths Publisher

Nick contributes maths expertise both in the office and in the schools that Hamilton supports directly. He has spent much time in the Blackbird Leys schools coaching and training teachers and support staff in and out of the classroom and working with subject leaders and leadership teams to improve consistency and raise standards. Nick has written primary and secondary planning materials for Hamilton. As a ‘Post Graduate: Mathematics Specialist Teacher’ Nick is well-placed to deliver maths CPD. With a passion for getting the best out everyone he works with, he considers watching all those he supports learn, grow and achieve to be a privilege.

Rebecca Walker
Rebecca Walker
Senior Graphic Designer

Rebecca is our Senior Graphic Designer who is responsible for creating our dynamic maths resources, topics, booklets, leaflets and has also be known to illustrate the odd book. Rebecca studied Graphic Design at Central Saint Martins’ College in London and gained over 20 years design experience working with top clients such as BT, Marks and Spencer and Ford. Rebecca’s favourite job to date (pre-Hamilton of course!), was designing a micro-site for David Almond when freelancing at Hodder Children’s Books in London. With 3 young children in tow, she is kept very busy; but still makes time to swim as a Masters swimmer and can regularly be seen at her local pool.


Our specialist subject consultants work closely with our staff and writers to ensure the highest standards of quality, consistency and pedagogy of all Hamilton's materials.

Grace Woollard
Grace Woollard

A graduate of English Literature who trained to teach at the University of Hertfordshire, Grace Woollard has more than 15 years’ experience teaching in primary schools in the South East. Grace believes that a creative and questioning approach is key in learning and that a great starting point is engaging children through high-quality literature, including picture books. Grace looks after Hamilton's English plan writers and writes English plans herself at the same time as being a full-time mum. In her free time, she dabbles in sewing and enjoys cycling around her home town on her bike, complete with wicker basket.

Jennie Kerwin
Jennie Kerwin

As a child, Jennie taught neighbouring children maths on a chalk board in her garage – whether they liked it or not! So it was pretty inevitable that would she end up being a teacher. She has a BEd in maths and computing and MEd in Educational policy and management. Jennie taught in a range of primary schools in the West Midlands before working for Birmingham advisory service supporting schools, mainly in ‘challenging circumstances’. She then moved to the South West to work as a regional director and writer for the National Numeracy Strategy. Jennie looks after various aspects of Hamilton's maths plans, writes maths plans for Hamilton and Abacus and is always keen to include models and images to help children to ‘see’ and understand maths.

Julie St Clair Hoare
Julie St Clair Hoare
Science and Topics

Julie studied chemistry at university before seeing the light, completing a PGCE and becoming a primary teacher. She enjoyed teaching children from 3 to 11 in a range of schools for 20 years and also being the head teacher of a city community primary school for 10 years. Julie then took up an associate tutor role at Brookes University helping to train teachers on the Postgraduate and BA courses. Her role at Hamilton is to look after the provision of high-quality cross-curricular topic and science plans that enable teachers to deliver engaging and creative lessons that inspire children.

Jon Kurta.png
Jon Kurta

Jon has over 30 years’ experience working in primary schools as a teacher, teacher trainer, and Local Authority Consultant. He has worked extensively in London and the South East and also taught as a maths specialist in international schools in Madrid and Khartoum. Following 2 years as a VSO in Ghana, in 1993 Jon completed a Masters in Mathematics Education at Roehampton Institute of Education. He has written and collaborated on a number of popular primary maths activity books and teacher support materials.

Jon remains passionate about developing sound and sustainable pedagogical approaches to teaching maths through accessible and manageable classroom activities for teachers and their pupils.