Autism Services Group is the first and only company to provide ADHD and Autism assessments and training.
We bring together specialist clinicians, therapists, trainers and support staff to diagnose and support clients across the United Kingdom & Ireland.


Autism Services Group began with a simple decision.
While visiting Ireland, founder Sarah Phelan recognised the growing need for accessible autism and ADHD assessments. Rather than waiting for change, she decided to create it.
Building ASG wasn't easy. As a single parent raising a child with additional needs, Sarah was balancing the realities of family life with the uncertainty of starting a business from scratch. She often says she had no idea what she was getting herself into, but she knew one thing with absolute certainty: if she built a service grounded in clinical excellence, empathy and integrity, it would make a difference.
That belief became the foundation of Autism Services Group.
Today, ASG supports individuals and families across the UK and Ireland through high-quality autism and ADHD assessments, professional training and neurodevelopmental services. Every member of the team shares the same commitment to providing evidence-based, compassionate care that puts people before process.
Although ASG has grown significantly, its mission has never changed: to make exceptional neurodevelopmental services more accessible and to raise the standard of autism and ADHD assessment through clinical excellence.
Rooted in clinical expertise, evidence-based practice, and real-world understanding of neurodiversity.
Equipping individuals and organisations with knowledge and tools to recognise and support autism and ADHD.
Identifying autism and ADHD accurately, validating lived experience, and breaking down stigma.
Delivering rigorous, reliable assessments that lead to genuine diagnosis and clarity.
Building capability through training, education, and ongoing professional development.
Providing pathways to formal diagnosis that transform understanding and access to support.
Rooted in clinical expertise, evidence-based practice, and real-world understanding of neurodiversity.
Equipping individuals and organisations with knowledge and tools to recognise and support autism and ADHD.
Identifying autism and ADHD accurately, validating lived experience, and breaking down stigma.
Delivering rigorous, reliable assessments that lead to genuine diagnosis and clarity.
Building capability through training, education, and ongoing professional development.
Providing pathways to formal diagnosis that transform understanding and access to support.




Select a team member to view their background in more detail.


