Louis Smith, a silver medalist in the pommel horse at Rio this summer, missed the Olympic celebrations for all of Team GB's medalists in order to visit mosques in Manchester.
This comes just one week after the gymnast posted a video that appeared to mock Islam - showing him pray to Allah whilst laughing.
Days after the video was revealed online, Smith apologised, revealing his feelings of "shame" on Facebook.
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"I am deeply sorry for the recent video you may have seen. I'm not defending myself what I did was wrong. I want to say sorry for the deep offense I have caused and to my family who have also been affected by my thoughtless actions.
"I recognise the severity of my mistake and hope it can be used as an example of how important it is to respect others at all times. I have learnt a valuable life lesson and I whole heartedly apologise."
To better himself, and further his apology, Smith saw the trips to mosques as a learning experience, as he explained via his Facebook page.
"I accepted the offer to learn more about the Muslim community and Islam. I can honestly say it was actually a really good day.
"I was a little nervous and anxious before visiting because of the events in the last week, but the people and the community were so understanding and inviting."
The four-time Olympic medalist explained that he was "ignorant to people's religion" and that it was wrong of him to mock Islam, especially considering his position as a role model and someone of sporting influence.
"We discussed my actions and they showed me what they learn and the true meaning behind their religion of peace. The community work they do for various charities is actually crazy and the money raised each year would blow your mind."
You can see the Facebook posts below.
More than 6,000 fans gathered in Trafalgar Square to see Team GB's athletes (the most successful British athletes ever), who were celebrating a heroes return.
Smith also missed a trip to Buckingham Palace for a reception with the Queen and Duke of Edinburgh in order to learn more about the Muslim faith.
The gymnast is under investigation by British Gymnastics, however, and could potentially receive discipline for his actions.
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