Hooper was born in Portsmouth and raised in Cardiff, Wales by a single father who worked as a civil engineer. He attended Christ's Hospital, a boarding school in West Sussex, on a scholarship, where he befriended his classmate Rob Gauntlett at the age of 11.
Hooper and Gauntlett frequently discussed their dream of climbing Mount Everest, which was sparked in 2003 when they were 16. They prepared by climbing Mont Blanc in 2005 and a selection of other peaks, guided by their school's climbing instructor, and cycling through Europe. They struggled to raise the funds to cover the costs of a professional guided expedition, and only secured their last sponsor on the day before they departed. In May 2006 they travelled to Tibet and climbed Everest from the north side, becoming the youngest Britons to reach the summit, both aged 19.
In 2007, Hooper and Gauntlett began their next expedition, "180° Pole-to-Pole": the first trip from the North Magnetic Pole to the South Magnetic Pole (a journey of 26,000 miles (42,000 km)) using only human and natural power, in order to raise awareness of climate change. Starting north of Greenland in April 2007, they skied, sledded, cycled and sailed until they reached the Antarctic in April 2008, after 409 days. They were subsequently awarded the National Geographic Adventurers of the Year prize for 2008.
Hooper, Gauntlett, and two other school friends, Richard Lebon and James Atkinson, travelled to Chamonix in January 2009 to attempt a winter ascent of Mont Blanc. While Hooper and Lebon ended up forgoing their effort, Gauntlett and Atkinson continued up an ambitious technical route and fell to their deaths from the Gervasutti Couloir.
Following Gauntlett's death, Hooper faced a £90,000 debt from his pole-to-pole expedition. After a book and movie deal were not possible due to the financial crisis of 2007-2008, he took up an office job in London. In late 2010 he moved to South Korea to attend Kyung Hee University in Seoul. Continuing regular work as a motivational speaker in South Korea, and now fluent in Korean, he was a cast member in the talk show Non-Summit for short time in 2014 until moving to Australia to complete his doctorate at the University of Wollongong.
- "Register | findmypast.co.uk". search.findmypast.co.uk. Retrieved 28 August 2016.
- BLUE (3 December 2014). "비정상회담 2015 캘린더" (in Korean). Naver. Retrieved 3 December 2014.
- Zeman, Ned (November 2010). "Higher, Colder, Deadlier". Vanity Fair. Retrieved 3 April 2014.
- Vann, David (30 January 2011). "The young Everest adventurers pulled into the void". The Guardian. Retrieved 3 April 2014.
- Huggler, Justin (22 May 2006). "Everest: No room at the top". The Independent. Retrieved 3 April 2014.
- "Tributes paid to British climbers". BBC News. 11 January 2009. Retrieved 3 April 2014.
- Vann, David (December 2008). "Who says youth is wasted on the young?". National Geographic. Retrieved 3 April 2014.
- Kim, Slater (27 August 2014). "이런 비정상 G11 때문에 월요일이 기다려지다니, 이런 나 비정상인가요?" (in Korean). Naeil Shot Magazine. Archived from the original on 3 September 2014. Retrieved 1 September 2014.
- "제임스 후퍼, JTBC '비정상회담' 하차…누리꾼들 "이유가 뭐지?"". http://news.donga.com/. Donga. External link in