SHIFT will deliver a co-created & piloted model for future service provision to improve sexual health amongst the target groups, including techniques for engaging with hard-to-reach groups. A first model will be designed for people aged over 45. SHIFT will use a confidential web-based process to self-assess/beadvised on next steps, but co-creation will ensure those less at ease with technology are fully engaged with the model. Using partner expertise, and by identifying organisations who work directly with socio-economically disadvantaged groups, the model will be adapted to reach these groups. Mobile units will access homeless people and others who do not/cannot access local public health services. Services will be multilingual and culturally/subject sensitive to reach groups such as migrants and sex workers. SHIFT will also deliver a jointly produced & piloted training programme relevant to all parts of the 2Seas area, based on extensive engagement with healthcare professionals, implemented via existing services.