Citrus Saturday, University College London | 100 followers on LinkedIn. Citrus Saturday, developed by UCL (University College London), teaches entrepreneurship and enterprise skills to young people around the world! Our Citrus Saturday Toolkit brings some of UCL’s world-renowned entrepreneurship training to a younger audience. Participants work in teams to create a business plan, make a citrus drinks product, and sell it to the public, then - just like any enterprise - they keep the profits!