Brilliant Brain works online and across South East London including Lewisham, Greenwich, Southwark and Bromley.

For South London, local context matters: South London families often need dyslexia assessment routes that work across borough school systems, exam access, university support, workplace needs and co-occurring literacy, memory or processing-speed questions. Families and adults should confirm whether the assessor holds an Assessment Practising Certificate or appropriate psychologist registration, whether the report follows SASC guidance, and whether it will be accepted for school, college, university, workplace, DSA, Access to Work or exam-access purposes.