People with severe mental illness (SMI) are more likely to smoke tobacco than people who do not have a mental health problem, which contributes to a shorter lifespan compared with people who did not smoke and health inequalities. To address this, the NHS Long Term Plan specified tobacco dependency services for people with mental health problems, including both inpatient and community services for each integrated care system. Inpatient services are being rolled out nationwide, while as a first step towards availability of community services across England, seven early implementer sites have been set up in each region. The National Collaborating Centre for Mental Health (NCCMH) was commissioned by NHS England to capture learning and good practice from the community-based early implementer sites and make recommendations to support other sites to mobilise tobacco dependency community-based community services in the future.