Small charities and voluntary groups are being offered free expert media advice through the CSV Journalist Network.
CSV, the UK's largest volunteering charity, has helped more than 100 organisations with press work and media relations.
Set up in association with the BBC and ITN, the scheme has also attracted support from many other media organisations since its launch a year ago.
Due to the growing number of volunteers, CSV is looking to expand the service to the sector.
Among the names helping the network are Sir David Nicholas, who created ITN's News at Ten in 1967, and Clive Roslin, father of TV presenter Gaby.
There are currently around 50 volunteers involved, many of whom are newspaper journalists or TV and radio broadcasters.
"We know that there is a demand for communications expertise out there from small charities," said Matthew Thomas, co-ordinator at the CSV Journalist Network.
The service is free although charities are expected to reimburse volunteers' expenses.
- For more information, telephone 020 7643 1371 or email firstname.lastname@example.org.