Passionate about sustainability, Karl champions the use of eco-friendly promotional merchandise that enhances brand offerings without compromising environmental responsibility. His dedication to sustainability extends beyond Media Hut. He previously served as Chair of the ESSA Sustainability Committee and currently co-chairs the AEV/ESSA/AEO Sustainability Working Group. He was also heavily involved in the development of ESAA's sustainability accreditation scheme.

Media Hut, recognised for its commitment to eco-conscious practices, holds accreditations from both ESSA and the BPMA. They proudly support the "Step Forward" pledge, demonstrating their unwavering commitment to tackling climate change and environmental challenges across all their operations.