Since we were founded over 25 years ago, the sustainability and environmental profession have been transformed, moving from the fringes of the global economy to its very centre. Our rebrand from IEMA to ISEP (the Institute of Sustainability and Environmental Professionals) reflects that change. Sustainability skills are now among the most in-demand — not only for sustainability and environmental professionals, but across every sector and for every job family.
Our rebrand makes clear the role that sustainability professionals play in the world today — and it strengthens the profession as a whole.
We represent 22,000 members across 125 countries, and this collective strength helps us raise the profile of the profession globally. It makes it easier for employers, policymakers, and the public to understand who we are, what we do, and why it matters.
While the rebrand benefits the entire profession, those who join now will be best placed to take full advantage of it.
Clarity: As sustainability becomes more deeply embedded across industries, the profession has evolved. We’ve rebranded to make it easier for stakeholders to understand what we do — and what competitive advantage a sustainability or environmental professional can bring. Even if you’re not a member, you benefit from greater recognition of what the profession contributes to organisations.
Professional recognition: This isn’t just a name change. It’s a renewal of purpose. The change strengthens ISEP’s professional recognition, raising the profile and credibility of all sustainability and environmental roles. By joining now, your credibility grows alongside ISEP, positioning you for the next stage of your career with a globally recognised professional suffix.
A united voice: Sustainability challenges are global, and tackling them requires a collective voice pushing for change across business, politics, and society. ISEP is that voice. We are the world’s largest membership body for sustainability and environmental professionals, setting standards and awarding recognised professional qualifications. Our members work across every sector and at every level to transform the world towards sustainability. Standing outside means you benefit indirectly — standing inside means your voice helps shape the agenda.
New opportunities: The rebrand isn’t just a new name. It’s a strategic shift in identity and purpose that will expand opportunities for members to grow and connect with peers worldwide and across professions. Join us to access those doors directly.
A profession ready for the future: As the world changes, ISEP is positioning the profession to respond to future challenges such as climate, biodiversity, and pollution. Standing on the outside means watching change happen. Standing inside means you’re helping to drive it.
The ISEP rebrand is a positive move for anyone working in sustainability, the environment, or in roles requiring green skills. The profession now has a clearer identity, stronger recognition, and a more powerful voice to shape the global sustainability agenda.
But to gain the full advantage, you need to be inside it — not outside looking in.
If you’re new to the profession or don’t yet meet the criteria for a higher grade, Affiliate membership is the simplest entry point. There’s no assessment required — just complete the quick online application, pay the annual fee, and you’ll instantly gain access to ISEP resources, events, and the member community. You can upgrade later as your career develops.
If you already have experience or qualifications in sustainability or the environment, you may be eligible to apply directly for Associate, Practitioner, or Full Membership. This route involves a short application and evidence of your skills, with guidance provided throughout. Successful applicants gain professional post-nominals, global recognition, and the career credibility that comes with ISEP status.
