AUTISM ASSESSMENTS Kingston-Upon-Thames
We offer Gold-Standard Autism assessments in Kingston-upon-Thames
for children, adolescents, and adults. Our gold-standard ASC assessments follow the highest clinical standards and are widely accepted by the NHS and other healthcare providers.
Receiving an autism diagnosis can be a powerful and affirming experience, offering clarity around lifelong patterns, strengths, and support needs. Choosing a high-quality ASC assessment is essential to ensure accuracy, depth, and meaningful outcomes.
Why chOOSE our AUTISM assessmentS in Kingston?
At Sage Psychology, our autism assessments in Kingston-upon-Thames adhere to the National Institute for Health and Care Excellence (NICE) guidelines, ensuring each assessment is ethical, thorough, and clinically robust.
Our AUTISM
Assessment process
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Contact us to book a discovery call. This is a 20 minute Zoom chat with Dianne Everitt, in order to make sure that an Autism assessment is right for you. If you have been referred by another practitioner, you can skip this step.
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If you proceed with the full assessment, we raise a deposit of £500 and send you questionnaires to be completed. You will complete most of them, and we will ask a parent or a close friend/partner/relative to complete one form.
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We book you in for another 2-3 hour appointment (this can be in person or online), and then we ask you to attend an hour long in-person appointment to complete the appropriate assessment (e.g. ADOS-2, ADI-R, 3Di for children).
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Our team meets and collates all of the information we have gathered to make an evidence-based diagnostic conclusion and write a detailed report. This normally takes 3-4 weeks.
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Once the report is complete, the lead practitioner on the case will book a feedback session with you, where we will go through the outcome of the assessment, and talk through specific recommendations.
What does a good quality assessment for Autism Entail?
A Gold-Standard Assessment for Autism will integrate the Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR) with the National Institute for Health and Care Excellence (NICE) guidelines used by the NHS to ensure every assessment is clinically rigorous. NICE guidelines recommend that autism assessments include the following elements, all of which are built into our ASC assessments in Kingston:
Meeting the diagnostic criteria
This is guided by the Diagnostic and Statistical Manual for Mental Health Disorders (DSM-V). We go through the criteria in meticulous detail to determine whether the markers of Autism are present. These include differences in communication patterns, as well as restricted or repetitive interests or behaviours.
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evidence of symptoms across multiple contexts.
Autism is a neurological blueprint, meaning it is present everywhere. We look at how you experience environments you are comfortable in versus those you are uncomfortable in. We typically consider work or school, home life, and relationships as the broad contexts for our investigation.
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Evidence of Symptoms since childhood.
We go through your developmental history in detail. While some adults have "masked" their traits for years, the neurological roots are always present from the beginning. This distinguishes Autism from other mental health conditions that often emerge later in life.
A multidisciplinary perspective
This is a core requirement of the NICE guidelines. A high-quality assessment involves more than one professional to provide a comprehensive view. We have a HCPC registered Clinical Psychologist on every case, and always validate our diagnostic findings as a team.
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A thorough differential diagnosis
DSM-V criteria state that in order to be diagnosed with Autism, we have to show that the symptoms cannot be better accounted for by another condition. Because Autism can overlap with other conditions, we have to consider the whole picture and look at all possibilities related to mental health, with C-PTSD, ADHD, OCD, and anxiety having high levels of overlap. (Note that if you are only being assessed for Autism, we won’t make a diagnosis of ADHD, but we will recommend further assessment if flags come up.)
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Measuring functional impairment
The DSM-V states that the symptoms must cause “clinical significant impairment” in social, occupational, or other areas of functioning. This is where high masking becomes relevant. High achievers with Autism can look very functional, so a good assessment will look beyond what yoyu appear to be achieving, and see the hidden signs of an inner cost. We often see a high prevalence of burnout, exhaustion, and sensory overload in high masking Autism, which can go easily unnoticed by others.
Use of validated clinical tools
NICE guidelines state that no single tool is adequate to diagnose Autism, but that the use of validated tools should be chosen to confirm clinical findings from a detailed clinical interview. We use a unique selection of Gold-standard tools that we determine on a case-by-case basis, including the ADOS-2, ADI-R, and ACIA. These tools provide an objective framework to support our clinical findings.
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A comprehensive action plan
NICE guidelines recommend a "comprehensive report" and a "documented profile" of your unique strengths and needs across social, educational, and occupational settings. A quality assessment must include an individualised support plan. We include actionable recommendations for workplace reasonable adjustments and sensory management, ensuring your diagnosis is a foundational tool for building a sustainable, neuro-affirming life.
We are proud to say
We meet all of the above criteria
Our autism assessments in Kingston-upon-Thames are designed to provide clarity, validation, and long-term support.
What will it cost?
Our assessments include a set number of interviews. If additional information is needed to make a diagnosis, or an additional interview is requested (for example, a second parent interview for young adults), this is charged at an additional £140 per hour.
Discovery call Free
AUTISM Assessment £2100
ADHD and AUTISM combined online/in person £2800
Additional interview (if required) £140 per hour
Post-Diagnostic Support
Following an Asc diagnosis, we offer specialist autism therapy and support in Kingston-upon-thames.
This includes emotional regulation support, sensory strategies, parent guidance, and autism coaching for adults.
Book Your AUTISM Assessment
If you are seeking a trusted autism assessment in Kingston-upon-Thames, our team is here to help. Book your assessment today, or contact us to learn more.
Unsure if an assessment is right for you?
Book a free chat or take our free screener for Autism and we will gladly guide you.
