eUROPE 2025 SPEAKER

William Ray, Head of Sustainability, CLS Holdings

Who does William look forward to meeting?
“I always get a lot out of meeting with the different technology providers to hear about the progress on their sustainability-related platforms and solutions. Things have moved so quickly for technologies that support companies on their journey to net zero, including optimising building performance and tenant experience as well as technologies to ease the burden of reporting.”

Bio:

Will Ray is Head of Sustainability at CLS Holdings, a listed commercial property investment company that specialises in office space in the UK and Europe. A seasoned ESG maven, Will leads CLS’s sustainability strategy and the transformations in their business and assets required to meet their ambitious targets. In over two decades of sustainability pioneering in real estate, he’s shaped many buildings and organisations into sector leading examples. Achievements include guiding Clarion Housing Group to the coveted Sustainable Housing Impact Label – the first UK housing group to claim this honour which, subsequently, led to record-breaking sustainability bond issues. Will is passionate about capturing the opportunities for enhanced social value in real estate alongside environmental transformation.
William ‘s LinkedIn:
Will Ray is Head of Sustainability at CLS Holdings, a listed commercial property investment company that specialises in office space in the UK and Europe. A seasoned ESG maven, Will leads CLS’s sustainability strategy and the transformations in their business and assets required to meet their ambitious targets. In over two decades of sustainability pioneering in real estate, he’s shaped many buildings and organisations into sector leading examples. Achievements include guiding Clarion Housing Group to the coveted Sustainable Housing Impact Label – the first UK housing group to claim this honour which, subsequently, led to record-breaking sustainability bond issues. Will is passionate about capturing the opportunities for enhanced social value in real estate alongside environmental transformation.

Bio:

CLS Holdings’s Website and LinkedIn:
CLS Holdings is a listed property investment company with a £1.9 billion portfolio spanning the UK, France, and Germany. The company specialises in high-yielding office assets located in well-connected, non-prime areas near major transport links. An active asset manager, CLS focuses on repositioning properties through lease restructuring, refurbishments, and developments, while maintaining close relationships with tenants to adapt to their evolving requirements. With over 700 tenants across 81 properties in three countries, the company prioritises long-term capital appreciation, cash generation, and a flexible, opportunistic approach to acquisitions, development, and disposals. CLS finances its operations through a range of structures and funding sources, with active cash management at its core. Its overarching goal is to be a leading office space specialist and a responsible, sustainability-driven landlord committed to delivering long-term value.
About CLS Holdings:

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