Three charities were shortlisted for the year-long brief, after applications were called for in October last year. Staff of the agency, headed by MD Chris Whitehouse, voted to work with the trust.
Senior consultant David Hare will lead a dedicated team of five, although other staff will be encouraged to take part if they wish.
Hare said this was the first time the charity had a public affairs partner, so the team would be helping to set up a coalition of support for the charity, raising its profile and ensuring its stakeholder management was robust.
The Whitehouse Consultancy will be helping the charity campaign on three issues. First, it wants to improve the situation for patients with HIV or Aids in prisons. The trust believes the Government is creating policy using data that is ten years out of date. It believes the number of prisoners with HIV or other blood-borne viruses is much higher than the data suggests. It is also calling for prisoners to have access to condoms and clean needles.
Second, it will campaign for reducing the cost of treatment and drugs for sufferers nationwide.
Third, it will call for better training of health professionals across the NHS to support people living with HIV.
Previously, the agency has worked with the Spinal Injuries Association and in local schools to help with citizenship education. It is retained by children's charity I Can and Volunteer Reading Help.