Wells took up riding at the age of eight and begin competing in dressage at the age of twelve.
In 2008, she won the junior international class at Hickstead U21 International, becoming the first disabled rider to win an able-bodied international event.
She was named as the first reserve rider for Great Britain at the 2008 Summer Paralympics in Beijing, China, but withdrew when her horse was found to have a tumour on its foot.

At the 2009 European Championships in Kristiansand, Norway, she won three gold medals; with her horse Pinocchio she won the individual and team grade IV events and was also part of the British squad that won the team championship.
At the 2010 World Equestrian Games held in Lexington, Kentucky, United States, she won gold medals in both the individual and freestyle grade IV events.

She was selected as part of the dressage squad for Great Britain at the 2012 Summer Paralympics in London, United Kingdom.
Riding Pinocchio she won a silver medal in the grade IV individual event with a score of 76.323%, finishing behind Belgium's gold medallist Michèle George, who scored 77.065%.
Wells's result helped to secure a gold medal for the British squad, which also included Sophie Christiansen, Deborah Criddle and Lee Pearson, in the team championship.
She won her second silver medal of the Games in the freestyle grade IV event, where she scored 81.150%, but was again beaten by George of Belgium.

Wells was appointed Member of the Order of the British Empire (MBE) in the 2013 New Year Honours for services to equestrianism.
Wells took up riding at the age of eight and begin competing in dressage at the age of twelve. In 2008, she won the junior international class at Hickstead U21 International, becoming the first disabled rider to win an able-bodied international event. She was named as the first reserve rider for Great Britain at the 2008 Summer Paralympics in Beijing, China, but withdrew when her horse was found to have a tumour on its foot.
At the 2009 European Championships in Kristiansand, Norway, she won three gold medals; with her horse Pinocchio she won the individual and team grade IV events and was also part of the British squad that won the team championship. At the 2010 World Equestrian Games held in Lexington, Kentucky, United States, she won gold medals in both the individual and freestyle grade IV events.
She was selected as part of the dressage squad for Great Britain at the 2012 Summer Paralympics in London, United Kingdom. Riding Pinocchio she won a silver medal in the grade IV individual event with a score of 76.323%, finishing behind Belgium's gold medallist Michèle George, who scored 77.065%. Wells's result helped to secure a gold medal for the British squad, which also included Sophie Christiansen, Deborah Criddle and Lee Pearson, in the team championship. She won her second silver medal of the Games in the freestyle grade IV event, where she scored 81.150%, but was again beaten by George of Belgium.
Wells was appointed Member of the Order of the British Empire (MBE) in the 2013 New Year Honours for services to equestrianism.
Sophie Wells