It has been ten years since Mark was left a triple amputee and, remarkably, this year will be the first time he competes for the UK Invictus Team.
The former Royal Marines Commando was injured in Afghanistan on Christmas Eve 2007.
He’ll be taking part in are: rowing, hand cycling and swimming.
Mark never did any of these sports prior to his injury and has never been involved in competitive sports but says the challenge is a huge milestone in his post-injury life.
He said: "The support since making the team has been phenomenal from everybody from my wife, my children from my friends, my family.
"The support from other teammates has been incredible and the support from the UK public as well.
"Just willing the UK team on to do the best that we can.
"My one regret is that I didn’t get into this a lot sooner, not just the Invictus Games but, prior to that, any kind of sport.
"Because it’s had a profoundly positive impact on my recovery.
"If I do well, I’ll feel like I’ve completely taken charge of my injuries and got my life back."
"I want to cap off this decade on a high."