Long-serving Aston Martin engineer Tim McCullough is reportedly set to leave the team at the end of the 2026 season, bringing to a close a relationship that has spanned more than a decade across the outfit’s various identities. McCullough stepped down from his position as Aston Martin’s Performance Director at the beginning of 2025 as part of a broader restructuring of the team’s senior management. He was subsequently moved to Aston Martin’s Performance Technologies to oversee the division’s expansion into other racing categories. The reported departure comes during a difficult season for Aston Martin, which sits 10th in the Constructors’ Championship after struggling for competitiveness through much of the year. McCullough’s reported exit therefore comes at a significant moment in Aston Martin’s restructuring, with the team attempting to reverse a difficult campaign while preparing for a new phase under an evolving leadership group.