Willis Lease Finance Corporation (NASDAQ:WLFC) ("WLFC" or the "Company"), the leading lessor of commercial aircraft engines and global provider of aviation services, today announced that its subsidiary, Willis Sustainable Fuels (UK) Limited ("WSF"), has entered into license and engineering agreements with two global leaders in sustainable technology, Johnson Matthey and Axens. These partnerships significantly advance WSF's sustainable aviation fuel (SAF) project in Teesside, Northeastern England. WSF is targeting Q1 2028 to begin commercial operations at its SAF production facility, with an anticipated annual production capacity of 14,000 tonnes (equalling approximately 50,000 litres a day) of SAF.