Upholding the right to campaign will be one of the National Council for Voluntary Organisations' priorities over the next five years, it has announced.
In its new strategic plan, published today, the umbrella body says it intends to "champion the right of voluntary organisations to campaign".
It also says that the NCVO itself will do more campaigning with members working on the front line and do more work in coalitions.
The strategy says the NCVO’s other priorities until 2019 will include supporting local infrastructure and "showing the sector is accountable and transparent".
Other key priorities include defending the rights of voluntary organisations, demonstrating the value of voluntary organisations and volunteering and making the case for effective funding and contracting arrangements.
The document says that the NCVO is "stronger than ever" after its merger last year with Volunteering England, which has given it "an even more powerful voice".
The NCVO says that it anticipates the environment for voluntary organisations will change rapidly over the next five years, with "voluntary organisations and volunteers playing a greater role in public services, while the ways in which donors support charities is likely to evolve".
"Changing social attitudes will bring challenge and opportunity: higher expectations of transparency and accountability, less preparedness to trust institutions, fewer expectations of the welfare state but more responsibilities placed upon individuals and communities," the document says.
"These trends will further emphasise the place of trusted voluntary organisations, and volunteering, at the heart of our communities."
The document was drawn up after a consultation with NCVO members last year.Martyn Lewis, chair of the NCVO, said: "Voluntary organisations and volunteers make the biggest difference when they can get the resources and advice they need and when the public and politicians have a clear understanding of their work. We intend to do all we can to ensure voluntary organisations have the support they need."