Table 2.

Study activities, data and data collection methods

No	Activity	Population	Data generated/collected	Data collection methods	Person(s) responsible
1	Community days (n~3)	Congolese migrants (n~30) living in and around Hackney, London, UK	Information about the local, sociocultural and historical context, customs and preferences. Beliefs and experiences related to routine and COVID-19 vaccination and other lived experiences of UK healthcare and vaccination policies. Suggestions for engagement approaches and interventions. Sociodemographic information.	IDIs (n~30). Post-it notes/interactive posters/graffiti walls. Sociodemographic surveys.	LML, LMK, SN and AFC will obtain informed consent and conduct IDIs. CH will manage logistics and registration, ensure participants are welcomed and comfortable and support linkage to wraparound services.
2	Key informant interviews	Local clinical, public health and community stakeholders (n~6)	Role and relationship with the Congolese community. Description of local pathways, processes and services. Suggestions for potential interventions and considerations for implementation.	IDIs.	AFC will obtain informed consent and conduct IDIs.
3	Codesign workshops (n~2)	Congolese migrants (n~8)	Codevelopment of and iteration on intervention prototypes.	Participatory workshops.	LML, LMK, SN, AFC and CH will facilitate workshops.
N/A	Evaluation	All populations plus community coalition	Feedback on involvement in codesign process. Feedback on participation in study activities (IDIs, workshops). Feedback on final prototype.	Evaluation forms/questionnaires. Voting.	CH will manage evaluation data with support from coalition.

IDI, in-depth interview.