Our Autism and ADHD Assessment Process
Clear, supportive, end-to-end diagnostic pathway
Assessment Tools
ADOS-2 (Autism Diagnostic Observation Schedule)
A structured observational assessment used internationally to support accurate ASD diagnosis.
DIVA-5 / DIVA-5 ID (Adult ADHD Self-Report Scale)
A DSM-5-based diagnostic interview for ADHD in adults, with a specialist version for individuals with intellectual disabilities
Our assessment service is designed to provide a thorough, compassionate, and tailored understanding of each individual’s unique strengths which includes:
Step 1: Pre-Assessment Screening
- Initial screening call and information gathering
- Review of presenting concerns, developmental history, and support needs
- Completion of screening questionnaires
Step 2: Full Diagnostic Assessment
Autism
- ADOS-2: Gold-standard observational assessment of communication, social understanding, and behaviours
- Clinical interview exploring developmental history, strengths, challenges, sensory profile, routines, social experiences, and support needs
ADHD
- DIVA-5 clinical diagnostic interview (or DIVA-5 ID for people with intellectual disabilities)
- Symptom review across childhood and adulthood
- Exploration of functional impact, executive functioning, organisation, attention, emotional regulation, and daily life barriers
- Integration of information from significant others (where possible)
Step 3: Collateral Information
- Optional input from family members, carers, or professionals to build a clearer picture
- Review of relevant clinical or educational reports
Step 4: Clinical Outcome
- You receive a clear diagnostic outcome based on all tools used, clinical judgement, and diagnostic criteria.
Step 5: Detailed Report
Every assessment includes a comprehensive report containing:
- Diagnostic outcome (including whether criteria are met or not)
- Summary of tools used and results
- Strengths-based psychological formulation
- Clear description of needs and recommended adjustments
- Tailored support, education, and workplace recommendations
- Signposting to appropriate services or follow-up options
Step 6: Feedback Session
- A dedicated appointment to talk through the results
- Opportunities to ask questions
- Discussion of next steps, support options, and reasonable adjustments
- Optional onward recommendations for therapy, coaching, or specialist services
About Lucy
Dr Lucy Brierley is a Chartered Psychologist with extensive experience working with adults with complex and diverse needs. She is trained in diagnostic assessments for Autism Spectrum Disorder (ASD) and Attention Deficit Hyperactivity Disorder (ADHD), including the use of ADOS-2 and diagnostic tools suitable for individuals with intellectual disabilities.
Lucy’s approach:
“I meet many people who feel they have to ‘mask’ in front of others — something that can be incredibly exhausting. My focus is always to create a safe, adaptive, person-centred environment where people can be fully themselves. I use flexible communication styles to build rapport quickly, particularly when assessing someone I haven’t met before. Every person is unique, and my assessments reflect that.”
Based in Brighton and working closely with the NHS and Local Authorities, Lucy is committed to providing timely, accessible assessments, especially in the context of long national waiting lists. Please contact Lucy at: lucy.brierley@venturepeople.com
Pricing
Full Autism Assessment (includes ADOS‑2 + interviews + report)
Price from £800
ADHD Assessment
Price £600
Combined Autism + ADHD Assessment
Price from £1250
Testimonials
“Thank you for taking the time to speak with me. Our chat has definitely given me some food for thought and thank you for the suggestions as well, I really appreciate that.”
“Just wanted to write and say thank you for this morning!”
“I saw ‘E’ after your session and she was happy/chuffed – she said, and I quote, ‘she’s amazing & I can see she cares’… I can see a difference in her sleep and behaviours. Working your magic!”
