PJ Cole, 29, runs a charity called Lifeline Nehemiah Projects, which provides education, practical training and safe accommodation for young people in Sierra Leone.
Mr Cole's address is part of a multi-faith service celebrating Commonwealth Day, and he was chosen to do so after being selected as a Queen's Young Leader - an award given to young people aged between 18-29 who are doing outstanding things in Commonwealth countries.
Lifeline Nehemiah Projects is based in the Kuntorloh in the east of the Sierra Leone capital Freetown, which is one of the worst-hit areas by Ebola in the country.
In response to the crisis, the charity's providing food and psychological and social support to quarantined families, people infected with Ebola, and orphans. It's cared for more than 8000 people quarantined with Ebola already.
The charity specifically uses former child soldiers and those affected by Sierra Leone's civil war to do its work.
It's also created a programme to educate people about Ebola which has now taught more than 50,000 people, and sit on the National Ebola Response Committee in the country.
Speaking about the crisis, he said: "Today a group of these former child soldiers with whom I shared my life are standing shoulder to shoulder with me. Ebola hit and our friends, neighbours, and colleagues were dying.
"One of the most harrowing experiences for me was taking supplies to a quarantined household and watching a pregnant woman die of Ebola, in front of our eyes, we had no choice we had to respond and fight back."
