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TreeHouse School is a non-maintained special school. This is a type of special school run by a charity rather than a local authority, which can receive certain types of Government funding. We are run by the charity Ambitious about Autism. 

The governing body is separate from, but over-lapping with, the charity's Board of Trustees in that two Governors are also Trustees and the Trustees receive reports from the governing body. By law we do everything that a governing body does in a local authority school except manage the budget and the premises.

The governing body meets six times in the year but Governors are also actively involved in many aspects of school life. They are completely committed to the success of the school and to ensuring the best possible provision for our pupils.

Here is the Governing Body Code of Conduct

If you are interested in becoming a governor at TreeHouse School, then please get in touch.

For further information about our governance please visit the Ambitious about Autism website.


Martyn Craddock
Chair of Governors

Martyn has been on the TreeHouse School governing body since December 2017 and is now its chair. Martyn is the father of twin boys, one of whom has attended TreeHouse School since 2009. As a parent, he has an understanding of the demands and joys of being a dad to an autistic child and the impact it has on his family's life. After an early background in catering, Martyn then moved into the charity sector, firstly working for one of the City of London livery companies, and then as Finance Director and CEO of St Luke's Trust in Islington. In 2015 he became CEO of United St Saviour's Charity, a large grant-making trust and sheltered housing provider in Southwark. Martyn is also a Ward Beadle in the City of London, a keen cyclist, and cook.

Sam Newton

Sam Newton's career focus has been in the SEND sector since 1998 with experience of supporting learners aged two to post-19 requiring support from education, health and care. Previous leadership experience includes experience across all key stage phases and in a variety of roles as Director of Education, Headteacher, Head of School, Assistant Head – KS3/4 Transformation, Assistant Headteacher for securing capital development projects for Specialist Status and Head of Primary in both day and residential, maintained, non-maintained and Charity settings. During the entirety of her career to date, she has worked with provisions who work as local, regional and national settings across a range of local authorities, social care and health funded. Leading and facilitating transformational change and turnaround where significant improvements are required has been a passion of hers, with an aim to ensure that provisions provide leading educational standards. Sam advocates a systems leadership approach whereby leaders at all levels are empowered to learn from each other and others for continual improvement in delivery to learners. Sam is proud that her efforts resulted in a Pearson’s National Teaching Award in 2021 but as she wholeheartedly recognises the work of the staff in any setting, it is by rights theirs too!

Angela Hobsbaum
Community Governor

Angela Hobsbaum worked at the Institute of Education in London (now UCL Institute of Education) in a number of roles, including PGCE tutor, MA course leader, and National Coordinator for Reading Recovery, an early literacy intervention for young children. She has also co-authored two books on guided reading at Key Stage 2. Now retired, she campaigns for safer cycling routes in Haringey and is learning how to grow vegetables.

Minas Petras

Minas has been working with autistic people for the past eight years. He has a BSc in Social Work and MSc in Psychology, and has a deep interest in improving the wellbeing and quality of life for both pupils and staff. As a staff governor, he aims to play an important role in making TreeHouse School an even better place for pupils and staff alike.

Dr Ramya Srinivasan

Ramya is a child and adolescent psychiatrist with over ten years experience in working in mental health, and a clinical researcher at UCL. Ramya has worked in a range of different clinical settings and communities with different needs. This experience has provided her with insight into the importance of a holistic approach to mental health and wellbeing.

She believes that education, inclusion, and community participation play a crucial role in the mental health and wellbeing of autistic children and young people. Ramya is committed to supporting children, young people, families, and communities to achieve better emotional health, and hopes to bring her clinical and academic expertise to her Governor role.

Naomi Levin

Naomi is an experienced maths teacher at Highgate School, covering all ages from 11 to 18. She is a member of Highgate’s Partnership Programme, running weekly maths clubs and organising maths days for pupils in local schools, with the aim of enthusing a love of maths in every pupil through differentiated challenges and games.

Naomi has been instrumental in developing outreach opportunities for pupils to work with neurodiverse children in various different educational settings. She has been involved with TreeHouse School since 2013, as part of the reverse inclusion project. Prior to teaching, Naomi worked in the industry and gained experience in managing projects and introducing change into organisations. She believes that every child matters, and that everyone deserves to be given the best educational experience to enable them to have the best quality of life both now and in adulthood.

Joanna Dziopa

Joanna has a wealth of senior leadership experience in educational and social care settings. She joined TreeHouse School from another outstanding special school for autistic children and young people in London.  

Joanna has extensive knowledge of autism and has been involved in developing autism provision and delivering training to schools, teachers and other professionals. She is committed to advocating for the rights of autistic young people and their families and championing inclusion, autism acceptance, neurodiversity and neuro-harmony through her work.


Steven Knell
Parent Governor

Steven has been involved with Ambitious about Autism since 2017, when he participated in the Manchester to London fundraising cycle ride for the first time. A passionate advocate for education and neurodiversity, he is the father of a current TreeHouse school pupil and brings that parents perspective to support the work of the governing body.

Steven has more than 20 years’ experience in the energy sector, having served in different research and consulting roles across the public and private sectors.

Tikysha Thomas
Parent Governor

Tikysha is a parent of a child currently attending TreeHouse school. Having a daughter at the school and a keen interest in education, Tikysha wanted to give something back by supporting the school and helping it to achieve its aims and objectives. Tikysha was a parent governor at her daughter's previous school for five years and therefore has strong knowledge. As a parent governor she hopes to play a role in the continued success of the school, ensuring the best possible outcomes for all pupils.

Karol Stelmaszczyk

Karol is a devoted advocate for inclusive education and currently serves as the Interim Headteacher at The Village School. Throughout his career, his passion has been to positively impact students' lives, especially autistic students. Karol believes in all-inclusive education enabling innovative teaching methods, fostering a supportive community, and ensuring that each student's needs are met with understanding and compassion. Karol is committed to shaping a future where every child, regardless of neurodiversity, can reach their full potential academically and socially. He is dedicated to fostering an environment where diversity and unique learning needs are acknowledged and celebrated.

Izzy Matthewson

Izzy is a data analyst working in cyber security at the Financial Conduct Authority, which she joined on the graduate scheme in 2017. Izzy has a longstanding passion for volunteering and is looking forward to making good use of her professional skills and first-hand knowledge of neurodiversity in a governance role in an educational setting. Izzy grew up in north-west London and currently lives in Camden. In her free time, she enjoys swimming, gardening, and playing video games.