Carl's son, James, was diagnosed last year with Grade 3 Anaplastic Ependymoma - an aggressive brain tumour.
After his diagnosis James underwent eight-and-a-half hours of brain surgery to remove the tumour, which was the size of a large lemon and attached to the brain stem.
Thankfully the operation was successful, with surgeons managing to remove the tumour. The biopsy came back showing that James had an aggressive form of brain cancer.
A few weeks later, James started a 56 week intensive course of chemotherapy which has numerous side effects. He contracted meningitis three times and had side effects from both the meningitis and the surgery.
Carl said: "I am taking on the London 2 Brighton Challenge because I wanted to push myself to do an extreme challenge to try and raise as much money as possible for CLIC Sargent.
"From the point of diagnosis, CLIC Sargent have been there to support us by provided a worker to help us with paperwork, money grants to help with hospital and living costs, a place to stay as a family of four whilst James underwent his treatment, and most importantly they have provided us with support.
"This challenge will push me mentally and physically, which is what this horrible disease and harsh treatment has done to my son James. He has dealt with everything so strongly, from learning how to talk, eat, crawl and walk again, he has faced every challenge head on and without fear.
"This is the approach I am taking with this challenge, I will push myself to do things I have never done before, and I will complete it regardless for him, and for all the other children going through this horrible disease."
We are delighted to say that James is starting to really progress and has now completed his treatment, he is happier in himself and starting to walk. Well done James!