Third sector groups should ensure money used to run their organisations is spent ethically, two figures in the sector have claimed.
Richard Gough, finance director of Tearfund, said the sector should use its spending power to influence companies' ethical policies.
"Rather than just asking companies for money, we can reward them for having a positive impact," he said.
Penny Newman, chief executive of Jamie Oliver's social enterprise, Fifteen, said social enterprises should use each other as suppliers and partners whenever possible.
"There's scope for so much collaboration in the sector," she said. "Social enterprises could source their supplies and workforce locally and make sure that money, expertise and training remain in their area."