So much work is undertaken by Volunteer Groups nowadays that I thought a separate tab was necessary. We have:

A Notice about volunteering and fundraising for Marie Curie may be viewed here.
An appeal to support those most in need in the community living in fuel or food poverty. Poster here and article here.
In retirement, I take old laptop computers, destroy the data, refurb and sell them with the profits going to Charity. Got any lurking? Ian, 07968 568057.
Renhold Good Neighbours: Info here.
Carers in Bedfordshire: These are good guys! Learn all about them here. They have an Art Exhibition coming up - read about it here!
Bedford Street Angels: More wonderful people. Read about them here.
St John's Hospice (Moggerhanger) supporters: Drivers, Visitors, Counsellors, Befrienders, Gardeners, Handymen, etc. See here.
Hospital Radio Bedford: I remember it well! Opportunity description here.
Blood & Organ Donation: 
Ever thought about becoming a Blood or Organ Donor? Read on here and here.
Street Champions:
River Wardens:
Charity Shop Volunteers:
Classroom Assistants:
. . . and so on.

Website Freegle (it's a give/wanted site, everything must be free) also has a volunteering section here.

Please send details of your volunteer activity for inclusion here!