Trusted Environmental Management Consultants

Our team of trusted experts work according only to the highest international standards and protocols.

We are a team of Environmental Management Consultants, with diverse professional and scientific backgrounds delivering high quality support and advice through the Blue Marble Partnership. We have developed our carbon accounting process and platform in order to provide highly accurate greenhouse gas inventories, emissions reduction advice and CO2 removals. Our team of trusted experts work according only to the highest international standards and protocols.

Our Team



Guy Rigby


Guy Rigby, a versatile entrepreneur and qualified chartered accountant, boasts a dynamic career spanning various industries, including IT, property, defense, manufacturing, and retail. He's held senior partner positions at two accountancy firms, served as a finance director, and provided expert guidance to numerous entrepreneurial businesses. In 2008, Guy joined Smith & Williamson, establishing the Entrepreneurial Services Group, which became a sought-after destination for entrepreneurs seeking commercial, tax, and corporate finance advice. Renowned as one of the financial world's top 50 influencers, Guy authored "From Vision to Exit," a celebrated guide to building and selling businesses. He's also a philanthropic record-breaker, rowing across the Atlantic in 2021, raising £750,000 for UnLtd, and now runs The Entrepreneurs' Adviser. Visit for more.

Atta Ajaybi

Scientific Advisor

Atta is an experienced sustainability consultant with over a decade of expertise in guiding companies towards their sustainability goals. Atta specialises in facilitating the transition to a Circular Economy and excels in Life Cycle Assessments(LCA). With a profound understanding of LCA and other sustainability assessment methods such as Material Flow Analysis, Natural Capital accounting, GIS analysis, and circularity indicators, Atta offers comprehensive and data-driven sustainability solutions. His track record of collaborating with diverse businesses showcases his commitment to fostering positive environmental and social impacts. Atta's dedication to sustainability makes him a respected figure in the field, driving lasting change.