Former Made In Chelsea star Spencer Matthews is to appear in a brave new documentary which will see him go searching for the body of his brother.

In 1999, Spencer's 22-year-old elder brother Michael set the record as the youngest ever Brit to make it up Mount Everest, but he disappeared shortly afterwards and his body has never been found.

In the new Disney+ documentary Finding Michael, Spencer will look to retrace his brother's steps with the aid of mountaineering expert Nims Purja in the hopes of finally locating his sibling's remains.

Announcing the project, Spencer wrote on Instagram: "In May 1999, my brother Michael Matthews became the youngest Brit at that time to climb Mount Everest, aged just 22. Whilst descending from the summit his life was lost.

"I was aged ten and for a long while afterwards believed in a youthful way that I would see him again.

"During recent years the question of whether or not Mike could be found and brought home to our family was often on my mind. I became uncomfortable with the thought of him being left up there, possibly in plain sight.

"So, 23 years after his death and with my family's support and an experienced team led by @Nimsdai, I travelled to Nepal and trekked to Mount Everest to find my brother and bring him home.

"Over the last eighteen months or so we've been making a documentary film about this once in a lifetime journey to the highest point on earth.

"I am now proud to announce, together with @DisneyPlusUK that early next year we will bring you "Finding Michael", a strong and powerful story of brotherly love.

"This has been the most meaningful and humbling experience of my own life and it is hoped the film will deliver my inspiring brother the decent legacy that he earned when so young."

Finding Michael will be released on Disney+ in early 2023.