Coming from an island state in the Indian Ocean, Avishka left Sri Lanka in 2012 to study abroad, which led her to study her BSc in Sustainable Development at Kingston University. She has a keen interest in wildlife, conservation and all sustainability issues. This interest has led her to read for an MSc in Climate Change and Sustainability at Brunel University, where she is involved in various volunteering activities and salsa dancing.

She has been involved in volunteering activities throughout her time at University since 2012. She was a regular volunteer for the Riverfly Monitoring Partnership that was working with the Kingston University Biodiversity Action Group. She is currently a volunteer for the Hillingdon Group of the London Wildlife Trust and she is also a volunteer nursery gardener at Osterley Park.

She was an International student ambassador in Kingston University for one year, and was also an ambassador for the Low Carbon Entrepreneur Competition organized by the Mayor of London.  She attended and participated at the COP 22 of the United Nations Conference for Climate Change in 2016 which was held in Marrakech, Morocco. During this experience, Avishka, who was a member of the Angola Delegation, was involved in the discussion with the Least Developed Countries regarding their mitigation plans against Climate Change.

Conservation has always been a strong passion of hers, which is why she chose to study conservation modules during her undergraduate and her postgraduate studies. Furthermore she completed her dissertation on coral reef conservation in Sri Lanka, which is a personal passion of hers.