The research aimed to examine impacts of the COVID-19 pandemic on NIADA clients’ substance use, related behaviours and delivery of services. The research objectives were to:

• Explore the impacts of COVID-19 on clients’ physical and mental health needs;
• Establish the impacts of COVID-19 on patterns of alcohol and/or other drug use behaviours;
• Examine sources of support for people who use services;
• Evaluate the impacts (challenges and opportunities) of remote working and/or blended approaches upon people who use services and providers;
• Provide recommendations for future policy and service delivery.