Hadow worked at
Mark McCormack's Sports Organisation from 1985 to 1988, acting as an agent representing the European equestrian interests of International Management Group (IMG). He managed IMG's relationship with the Swedish Equestrian Federation to deliver the funds, through corporate sponsorship, to underwrite the staging costs of the inaugural World Equestrian Games in Stockholm (1990). The Games brought together the world championship events of the six disciplines under the jurisdiction of the International Equestrian Federation (FEI): dressage; eventing; vaulting; carriage driving; endurance; and show jumping. In 1995 he set up The Polar Travel Company offering guided expeditions to the Arctic and Antarctic, and most notably the North Geographic Pole. In 1997 he organised the McVitie's Penguin Polar Relay, the first all-women expedition to the North Geographic Pole, involving 20 British women, operating in five teams of four, accompanied throughout by two professional women Canadian guides. Hadow is an Honorary Vice-President of the Royal Scottish Geographical Society, an Honorary Vice-President of the Scientific Exploration Society, an Honorary Patron of British Exploring, and President of the OH Adventurers. He received an Honorary Doctorate of Laws from the University of Exeter (2004), and an Honorary Doctorate of Science from the University of Plymouth (2009).
North Pole - Solo, unsupported In 2003, Hadow
trekked 770 km from
Ward Hunt Island, Canada to the
North Geographic Pole in 64 days becoming the first person to complete the journey solo and without resupply. He started the trek on 17 March 2003, pulling a 265 lb sledge and arrived 19 May. Of the 850 hours travelling across the disintegrating sea ice, he swam part of the way wearing an immersion suit when he encountered open water or thin ice.
South Pole In 2004, Hadow partnered with
Simon Murray for a trek to the
South Geographic Pole. and the expedition raised US$450,000 for the Royal Geographical Society (London)
Catlin Arctic Surveys In 2009, Hadow organised and led an exploration team to survey the thickness of the winter-spring sea ice in the northern Beaufort Sea area (Arctic Ocean). Its purpose was to provide a new source of information from the ocean's surface to help forecast how long the perennial sea-ice cover would continue to be a year-round surface feature of the planet. The expedition, known as the "Catlin Arctic Survey" after lead sponsor Catlin Group Limited, an international speciality insurance and reinsurance company, covered 430 km in 73 days, with Hadow accompanied by Arctic explorer,
Ann Daniels, and photographer Martin Hartley. The Survey's observations, viewed in the context of decades of existing measurements by submarines, satellites and buoys, led Professor Peter Wadhams of the Polar Ocean Physics Group (University of Cambridge) to suggest the Survey's work added further evidence to an emerging view that there is a significant probability that by 2020 only 20% of the Arctic Ocean basin will have sea ice cover in the late summer. Professor Wadhams also suggested that by 2030–40, there is a significant probability that the Arctic Ocean's sea ice cover will be transformed into an ice-free open ocean in summer times. Catlin Group Limited continued its support of the Arctic Survey in 2010, with a scientific focus on ocean acidification and in 2011 on ocean thermo-haline circulation. In 2010 and 2011 the Surveys, delivered by newly formed Geo Mission Ltd, involved two inter-linked field research components: a seasonal (winter/spring) research base located on the sea ice of the Gustav Adolph Sea on the edge of the Arctic Ocean (off Ellef Ringnes island) amongst Canada's northernmost Queen Elizabeth islands, and a 300 – 450 km transect of the Arctic Ocean surveyed by a team of explorers in the Winter / Spring. Scientific papers have since been published by the participating research groups. Hadow, Chip Cunliffe and Martin Hartley co-edited the book,
Catlin Arctic Survey: Investigating the Changing Arctic Ocean Environment, published by Polarworld (2013). In summer 2017, he led Arctic Mission, which became the first boat expedition without icebreakers to sail into the ice-free international waters surrounding the North Geographic Pole. Its pioneering research into the wildlife, ecosystem, and
marine pollution of these waters was led in the field by Tim Gordon (University of Exeter, UK). Its marine pollution work was cited by Senator
Sheldon Whitehouse (Rhode Island) in the US Senate to introduce the 'Save Our Seas Act'. ==Personal life==