MD Chris Whitehouse said the pro bono scheme was open to charities and voluntary groups that would not otherwise have a budget for PA work.
The agency ran a similar scheme last year for the Spinal Injuries Association. The brief was to raise the profile of the body among policymakers and push for reform of the provision and funding of NHS care and treatment for spinal cord injury patients.
The agency is prepared to help charities gain government backing or statutory funding, Whitehouse said.
Organisations interested in working with the agency should contact Kris Verlé by the end of October.