NCVO - Website for both volunteers and organisations.
https://www.ncvo.org.uk/
Do IT - The UK's national volunteering website.
https://doit.life/
The National Youth Agency - Website aimed at organisations who are involved in young people's personal and social development.
http://www.nya.org.uk
Derby City Council - Your local City Council's official website.
http://www.derby.gov.uk
vinspired - The perfect site for any volunteers aged 16 to 25 in England.
http://www.vinspired.com
Investing in Volunteers - Information on how to gain the UK quality standard for all organisations which involve volunteers.
http://iiv.investinginvolunteers.org.uk/