Mansell suffered a 3–0 loss to Kim Huybrechts in the first round of the 2015 World Championship. Mansell and Dolan met the Netherlands' Van Gerwen and Van Barneveld for the second successive year at the World Cup, this time in the quarter-finals. Dolan lost 4–2 to Van Gerwen, but Mansell defeated Van Barneveld 4–3 meaning a doubles match was required and, just like last year, Northern Ireland were thrashed 4–0. Mansell qualified for four European Tour events and was knocked out in the second round in all of them.