Kevin went through 18 months of rigorous tests before going under the knife to give someone he didn't know the chance of a new life.
The 35-year-old from Livingston is one of very few people who become altruistic donors in the UK each year. It is thought that Kevin is one of the first altruistic organ donors to donate while working at West Lothian Council.
Although Kevin doesn't personally know who he donated his kidney to, he has been told he's helped save the life of a 50-year-old woman in England. He returned to work just two weeks after the operation and wants to use his sacrifice to encourage other people to donate, especially blood.
Kevin said: "I've donated blood for about 10 years and donated blood platelets for about two years. I guess what really made me decide to put myself through this was when one of my children fell ill for a period. Thankfully she is fine now but scenarios like that really make you appreciate how precious life can be and make you think about what you can do to help another person.
Even if one person hears about my situation and then feels they want to go and donate blood, then it's a win-win."
West Lothian Council Grounds Maintenance Manager Tony Fleming said: "This is a really selfless act on Kevin's part and shows the kind of person he is. We were happy to give him the support required and are delighted to have him back with us at work so quickly. Speaking on behalf of all of his colleagues we are really proud of what he has done."