Missing British billionaire Hamish Harding is an adventurer who has been to space, taken Buzz Aldrin to the South Pole and holds three Guinness World Records.

The 58-year-old chairman of private plane firm Action Aviation was inducted into the Living Legends of Aviation in 2022 where he was honoured for being an “enthusiastic pilot” and “experienced skydiver”.

He lives in Dubai with his wife Linda and two sons Rory and Giles, according to the awards body.

Hamish Harding signing a Titanic Expedition sign
Hamish Harding is one of five people on board a submersible tourist vessel which went missing during a voyage to the Titanic shipwreck (Dirty Dozen Productions/PA)

He has a stepdaughter named Lauren and a stepson named Brian Szasz, the Guardian reported.

The newspaper also said that Harding has a natural sciences and chemical engineering degree from the University of Cambridge.

He holds three Guinness World Records – fastest circumnavigation of the Earth via both poles by plane, greatest distance covered at full ocean depth and the greatest duration spent at full ocean depth.

In 2019, Harding led a team of pilots and astronauts to achieve the first record in 46 hours, 40 minutes and 22 seconds.

Buzz Aldrin at the Science Muesum
Apollo astronaut Buzz Aldrin went to the South Pole with Mr Harding (Anthony Devlin/PA)

This was to mark the 50th anniversary of the Apollo 11 moon landing by Neil Armstrong and Buzz Aldrin, according to the Living Legends of Aviation.

But Harding has made more than one trip to the South Pole.

The awards body said that in 2016 he accompanied Mr Aldrin – who became the oldest person to reach the South Pole aged 86 – and took his son Giles in 2020, who became the youngest person to reach the South Pole aged 12.

In 2021, Harding dived in a two-man submarine mission lasting 36 hours to the Challenger Deep in the Mariana Trench with American explorer Victor Vescovo, breaking records by traversing the deepest part of the ocean for four hours and 15 minutes and travelling 4.6 kilometres along the sea floor.

In a post on Facebook to mark the five-month anniversary of the dive, Harding said: “Can’t believe it’s been that long already but absolutely can’t wait for our next mission/journey/adventure!”

In June 2022, Harding flew to space as part of the fifth human space flight run by Jeff Bezos’s company Blue Origin.

Months later in September, the adventurer won his Living Legends of Aviation award which he described as an “honour” in his acceptance speech before thanking his wife and two sons as well as his “very loving, very beautiful, very loyal” golden retrievers.