In 2009, the European Commission approved a repayable investment of £ 114 million by the UK Government made to Bombardier Aerospace for its new C-Series programme. The investment supported research and development activities by Bombardier’s plant in Belfast into new composite wing technology.

Matthew had assisted Bombardier in obtaining this approval. He also represented Bombardier as an intervener in a legal challenge brought by a competitor, the Brazilian manufacturer Embraer, including drafting Bombardier’s written observations to the General Court. In 2012, and prior to a hearing before the Court, Embraer decided to discontinue its challenge.