In summer 2006, the second cycle of Living TV's Britain's Next Top Model included Abigail Clancy as one of the thirteen finalists in the competition, competing over 10 weeks for a modelling contract. Abigail Clancy made it to the final runway show with fellow contestant Lianna Fowler, but at the final judging Abigail Clancy lost out to Fowler.
Since appearing on Britain's Next Top Model, Abigail Clancy has modelled for several magazines and newspapers. In May 2007, Abigail Clancy appeared on the front cover of Arena magazine, and modelled the Triumph Bonneville Motorbike in the Daily Mail newspaper. Abigail Clancy was chosen to appear in Sports Illustrated magazine in the 2010 swimsuit edition. Abigail Clancy was featured for her sporting connection to Peter Crouch and was photographed for the magazine wearing only body paint to make it appear as if she was wearing an England shirt.
Abigail Clancy appeared in a 2010 campaign for Umbro sportswear, modelling an England shirt, along with other footballer's wives and girlfriends from countries that have won the World Cup.
Abigail Clancy walked in the Giles Deacon Ready-To-Wear line Giles Spring 2011 collection.
In March 2011 Abigail Clancy appeared on the Elite Model Management: New York division website.