UK Goverment guidelines
Government guidance for volunteering during coronavirus (COVID-19)
NAVCA National Association for Voluntary and Community Action
National Coucil for Voluntary Organisations. They have brought together information and guidance for supporting volunteers during the pandemic. Information about involving volunteering is available on their page How volunteers can best be engaged and supported during the covid-19 pandemic.
They have also been running a series of webinars on their YouTube channel NCVOonline
Involving volunteers – what you need to know
How to involve and safeguard volunteers during coronavirus