"Go veggie to save the planet, says world champion freerunner Tim Shieff" https://www.theguardian.com/environment/2015/jun/16/go-veggie-to-save-the-planet-says-world-champion-freerunner-tim-shieff, interview with The Guardian (16 June 2015).
Tim Shieff Quotes
"An interview with vegan parkour wonder Tim Shieff" https://www.vegansociety.com/whats-new/blog/interview-vegan-parkour-wonder-tim-shieff, interview with The Vegan Society (11 March 2016).