 Cairns is a member of the 'Curry Club' group of Conservatives, a dining society set up in 2010 composed of Conservative MPs that were seen as independently minded though not hostile to the then Prime Minister David Cameron.In 2011 Cairns became co-chairman of the newly formed All-Party Parliamentary Group on the Arch Cru Investment Scheme, intended to investigate the facts surrounding Arch Cru investment funds scandal and achieve justice for the victims.He was re-elected in 2015 with an increased majority of 6,880.