Our members

GMBA Walter France stands for:
– Values: commitment, team spirit, recognition, respect, responsibility, and trust.
– A vision: “To remain an independent company, focusing its development on:
• Meeting the current and future needs of its stakeholders, particularly its clients.
• Pursuing overall performance—economic, social, societal, and environmental.
• Promoting the values included in its Social Responsibility approach.”
– Services: legal and contractual audits, acquisition audits, social and tax audits, corporate and personal taxation, transfers, wealth management, strategic and financial management, transfer pricing, international mobility, HR services, implementation of information systems, CSR support, reporting and consolidation, etc.
– Labels:
• Lucie since 2012
• EcoVadis since 2024 (silver in 2025)
• GPTW in 2023 and 2025.
– A GMBA Mécénat endowment fund, financing associations.

Goodwill-management is a sustainability and ESG strategy consulting firm with a purpose: to support organizations and their leaders enhance overall performance. Our expert teams offer strategic, forward-thinking advice, fostering trusted partnerships to accelerate the transition toward a sustainability society.

A subsidiary of Baker Tilly France and ESG global lead within the Baker Tilly International network, Goodwill-management has around 50 committed consultants based in Paris, Nantes and Lyon.

Since 2003, the firm has placed economic, social, and environmental impact measurement at the heart of its approach to guide decision-making and drive the sustainable transformation of organizations.

From CSR to climate strategy, low-tech solutions, or biodiversity, Goodwill-management offers *actionable* and innovative solutions to fully integrate sustainability matters into corporate strategies.

We design one of the most widely read media in the world.
You consult it between 10 and 500 times a day, sometimes more, and often without even realizing it. We inform you, create connections, spark curiosity, and ensure your safety.

We are an SME from Brittany, deeply rooted in our region for over 40 years, and committed to developing a positive-impact economy.

To ensure the sustainability of our company, we strive for a global and balanced performance. This means integrating—inseparably—economic, social, environmental, and territorial dimensions into the company’s strategy and governance. We do this out of passion, common sense, and without pretension. We have been LUCIE 26000 certified since 2014.

Fond of thinking outside the box, we seek to replace “yes, but” with “what if.”

Gravel Explore is a Bordeaux-based expert in premium gravel and electric bike experiences across France.

We offer guided and self-guided tours, private trips, corporate cycling events, and custom itineraries for travel agencies. Ride through vineyards, historic villages, and coastal landscapes from Bordeaux to Saint-Émilion, Arcachon, Lacanau, the Dordogne, and beyond.

We also support travel agencies, groups, and companies with private tours, tailor-made stays, and cultural, historical, and gastronomic experiences. Explore beyond the ride.

GRDF est gestionnaire du plus grand réseau de distribution de gaz en Europe. L’entreprise exploite et entretient le réseau en garantissant la sécurité des personnes et des biens. Présente dans plus de 9 500 communes, elle est partenaire des collectivités qu’elle accompagne dans leur décarbonation. En région Nord-Ouest (Hauts-de-France et Normandie), GRDF distribue le gaz à 2 millions de clients pour se chauffer, cuisiner, se déplacer, quel que soit leur fournisseur. Elle contribue également à l’atteinte des 20% de gaz verts dans les réseaux en 2030, un objectif qui permettra de bénéficier d’une énergie renouvelable et produite en France. En parallèle, l’entreprise s’inscrit dans une trajectoire de décarbonation afin de diviser par 2 ses émissions à 2030. Pour finir, GRDF s’est doté d’une raison d’être : “Agir pour donner au plus grand nombre le choix d’une énergie d’avenir, performante, renouvelable, sûre et abordable, au cœur de la vie des territoires.”