NHS ADHD assessment services across London and Greater London are commissioned through a patchwork of integrated care boards and delivered by trusts including providers such as South London and Maudsley NHS Foundation Trust and various North and East London NHS Foundation Trust services, though exact responsibility varies by borough. Both adult and CAMHS pathways are under significant strain, with waiting times commonly described as multi-year across most London boroughs, reflecting longstanding capacity issues that have been well documented by NHS England and local patient groups. London sees notably high uptake of the NHS Right to Choose pathway, which allows patients to request assessment from an alternative NHS-commissioned provider, yet even these routes frequently carry substantial delays as demand has outpaced available appointments. GP referral patterns across the capital can be inconsistent, with some practices still hesitant to refer adults, particularly women and those presenting with inattentive-type symptoms. While waiting for a formal NHS assessment, a qEEG brain activity screening can provide objective, neurophysiological evidence of attention-related differences, giving individuals and their GPs meaningful clinical context ahead of any diagnostic appointment.