The alliance, which is operating under the banner of CSR Progress, is targeting businesses and industry bodies based in Europe, offering strategic advice and programmes to measure CSR performance and communicate policies.
All three firms will jointly tout their advice and product offerings as part of the partnership.
Based in Bath, CSR Progress member csrnetwork is led by former Enviros Aspinwall operations director Mark Line.
The company’s client list includes adidas-Salomon, BP, British Airways and Danisco.