Warning: contains graphic images of serious injuries.
A group of Harley Street skin specialists is treating wounded veterans - for free.
They are providing cosmetic surgery and laser treatment for those with shrapnel wounds, blast injuries and burns.
They aim to provide types of surgery that cannot be found through the NHS, and the veterans say it is helping them rebuild their lives.
Mark Allen was 19-years-old when he stepped on a roadside bomb, sustaining major blast injuries that resulted in him losing both legs:
"We were out on early morning foot patrol; I was the front man in an eight-man section.
"We were checking for IEDs, and unfortunately I stood on one.
"As soon as it went off I lost both my legs instantly. I had shrapnel wounds to my arms and my face."
He was one of the youngest soldiers in Britain to be so seriously injured.
Mark’s laser treatment helps to reduce his scar tissue and increase the elasticity of his skin.
Graphic images warning - Jamie Hull: "The cockpit was a blazing inferno and I was on fire."
Specialist Dr Aamer Khan has been working with him and other veterans since 2012
He and a group of specialists provide the treatment for free, and Dr Khan has been nominated for an award by the charity Soldiering On, which recognises services to the Armed Forces Community.
He has now set up a charity, back on Track, to help raise funds so the specialists can pick up where the NHS has left off:
"We realised that there were charities helping in different ways, but there wasn’t a coordinated effort in looking at the whole person and trying to help them."
NHS England say they can only provide cosmetic treatment based on clinical need, which means life-saving treatment has a higher priority than long-term scarring.
Former SAS soldier Jamie Hull is about to start treatment at Harley Street for his burns, 10 years after the plane he was training in caught fire.
Jamie was forced to jump from his plane - which ruptured his liver and colon.
He has had 61 surgeries since sustaining his injuries, and Jamie says he is lucky to be alive.
"I sustained an engine fire, and that moment changed my life inextricably.
"I was 60% third-degree burn in terms of medical diagnosis.
"If they can offer me a little intervention that will perhaps put a little more final spark back into my appearance, and give me that bit more of a dignified outlook, then I believe they can be very useful and powerful for an individual."