Animal Defenders International have exposed the primate trade across three continents, including an undercover worker inside a primate unit at HLS during 2007 and 2008.

Struggling monkeys were strapped in to chairs and forced to inhale products. Many were housed in one cubic metre cages and then taken out to be held down by workers as tubes are forced down their throats.

217 monkeys were killed in just five studies for customers including Astra Zeneca, GlaxoSmithkline and the Ministry of Defence.

Animal Defenders International have written a detailed report detailing their findings at HLS, including never seen before photos from inside HLS in 2007 and 2008.

Download the report by clicking here.

Visit the Save the Primates website to find out more about their investigation: http://www.savetheprimates.com/primateban/news/