Openly-gay former Wales rugby captain has come third in Chanel 5's reality TV show Celebrity Big Brother.
Thomas was originally bookies' favourite to win and despite only receiving one eviction nomination from fellow housemates, lost out to actress and television presenter Denise Welch.
X Factor contestant Frankie Cocozza came in second.
The 37-year-old was greeted with cheers from fans when he exited the Celebrity Big Brother House, which he had lived in for three weeks.
In an interview with Celebrity Big Brother presenter Brian Downling, Thomas said of his time in the Big Brother house: 'I tried to get on with everyone, I tried to be myself with everyone. I didn't try for people to like me, I just liked them.
'I'm a team player, I don't like to do things on my own, I'm not an individual. I wanted to be the team player.'
When asked about coming third Gareth replied: 'I think everybody's focus was to get to the last few days, and not to get voted out by the people in the house, so that's a massive achievement.'
Kings Cross Steelers RFC, the world's first gay rubgy club were quick to congratulate Gareth for his achievements on the reality show.
Tim Sullivan, Kings Cross Steelers Rugby club chairman said: 'The club members and I wish to congratulate Gareth Thomas on reaching the Celebrity Big Brother final.
'Throughout his time in the house he has shown a great positive and optimistic attitude to the fellow housemates. It is obvious that he genuinely cares for his fellow housemates rather than being crowned the winner.'
Sullivan continues: 'This positive mental attitude reflects the values of rugby and shows that the game fosters teamwork, sportsmanship and respect for your opposition and your team mates.'