Dyslexia Assessments for Children, Adults and Students
PATOSS-registered specialist assessments across Sheffield, Peterborough, and the UK
Whether you are a parent who has been worried for months, an adult looking for long-awaited answers, or a student preparing a DSA application, Defining Dyslexia gives you something clear and concrete to work with. Every assessment is carried out by Mark, a PATOSS-registered specialist assessor with fifteen years of experience. Face-to-face in South Yorkshire and Cambridgeshire, or remotely across the UK.
Our Services
Dyslexia Assessments for Children
A thorough, evidence-based assessment identifying how your child learns, where they are struggling, and what will genuinely help. Reports meet school, local authority, and exam access requirements.
Dyslexia Assessments for Adults
It is never too late for answers. An adult assessment gives you a clear cognitive profile, practical recommendations, and a report recognised by employers, universities, and Access to Work.
Assessments for University Students
Preparing a DSA application or needing evidence for exam arrangements? Defining Dyslexia provides SASC-compliant reports accepted by universities across the UK.
Online and Remote Assessments
Can't travel or prefer to assess from home? Full diagnostic assessments are available remotely across the UK, with no compromise on quality or rigour.
Support for Schools
Access arrangement testing, SENCo cover, and staff training on JCQ Form 8 and identifying SpLD. Practical, experienced support that fits around your school's needs.
CPD and Training for Educators
Specialist continuing professional development for teachers and SENCos on identifying and supporting dyslexia and other SpLDs. Delivered in-house or remotely, tailored to your setting.
Why Families and Schools Choose Defining Dyslexia
- PATOSS-registered with the Assessment Practising Certificate (APC)
- Fifteen years of specialist experience across child and adult populations
- Every report written with clear, practical recommendations
- Face-to-face across South Yorkshire and Cambridgeshire, remote nationwide
- Small independent practice, personal service throughout
Straightforward, transparent pricing
Our assessment fees are clearly listed with no hidden costs. Visit our pricing page to find out more.
What Clients Say About Defining Dyslexia
Here’s what some of our clients have to say about their experience working with us.
Customer Review
The dyslexia services and dyslexia support provided by Mark are truly exceptional! He is knowledgeable, supportive, and tailors his approach to individual needs. With innovative teaching strategies and a compassionate manner, Mark empowers individuals to thrive.
Parent of student, aged 11, Sheffield
Customer Review
Mark's focus on early intervention, personalised learning plans, and using technological aids ensures remarkable progress. Although my child did not get a SpLD diagnosis, Mark's analysis supported Oscar to grow in confidence and independence. The support for school and us as parents was exceptional. Highly recommended!
Parent of child, aged 16, Peterborough
Customer Review
Mark supported us with Access Arrangements. His knowledge, friendly approach supported both students and staff. His reasonable fees were also a deciding factor! We are confident he will become part of the furniture.
Secondary School, N E Lincolnshire
About Your Assessor
Every Defining Dyslexia assessment is carried out by Mark Wilson, a PATOSS-registered specialist assessor with fifteen years of experience supporting children, young people, and adults with dyslexia and other learning differences. Mark holds the Assessment Practising Certificate and works to the standards set by SASC.
Ready to take the next step? Get in touch and we will respond within one working day.
E-mail: Mark:@definingdyslexia.org
We operate virtually across the UK, providing accessible support wherever you are. For in-person appointments, we serve Sheffield, Peterborough, and the surrounding area. Contact us to learn more!