A "successful appellant" refers to a person who has won their case on appeal, meaning they have convinced a higher court to overturn the decision of a lower court. Full definition
Douglas has had successes in the Court of appeal including Matthews v Metal Improvement Company, Vicar of Spalding v Chubb Fire and was the only successful appellant in the Timmins v Gormley group of judicial bias cases. (dacbeachcroft.com)
Vernon Flynn QC of Essex Court Chambers, was instructed by Fried, Frank, Harris, Shriver & Jacobson (London) LLP and Harneys (BVI) for the successful Appellant. (essexcourt.com)
M&C Energy Group Ltd v St Cuthberts Mill Ltd [2013] EWCA Civ 935: Acting for the successful appellant in the Court of Appeal. (cyklaw.com)