Covid Mutual Aid UK is a group of volunteers supporting local community groups organising mutual aid throughout the COVID-19 outbreak in the UK.
Their basic idea is to coordinate care efforts for people who are self isolating, especially if they are part of a more at risk demographic including older people, people with disabilities and people with other pre-existing health issues.
They focus on providing resources and connecting people to their nearest local groups, willing volunteers and those in need.
Here is their page of resources for organizing COVID-19 Mutual Aid Local Groups: https://covidmutualaid.org/resources/