Olleco, based in Southall, near Heathrow airport, stands at the forefront of the UK's sustainable aviation fuel industry, collecting used cooking oil from prestigious locations like Buckingham Palace and Windsor Castle to produce environmentally friendly biodiesel and sustainable aviation fuel. Sustainable Aviation Fuel (SAF) emerges as a key player in the roadmap to decarbonize commercial aviation, with experts highlighting its potential to drive significant emission reductions. The UK's upcoming SAF mandate, which requires airlines to increase their use of SAF annually, presents both opportunities and challenges for the industry. Despite the higher production costs associated with sustainable aviation fuel, airlines will have to pass on these additional expenses to passengers, potentially leading to an increase in airfares. Moreover, concerns arise about the environmental impact of importing SAF due to limited domestic production capacity, emphasizing the importance of investing in more UK-based refineries to reduce carbon footprint from transportation. Although sustainable aviation fuel offers a promising solution to combatting climate change in aviation, addressing the economic implications and expanding domestic production capacity remain crucial steps in achieving a greener future for the industry.