Jo Kaye joins Network Rail's executive committee in place of Paul Plummer, who leaves Network Rail this month to lead the Rail Delivery Group.
Ms Kaye joined Railtrack as a graduate trainee in 1995 and has recently served as route managing director of the LNW route and then a director in the strategy and planning team.
Chief executive Mark Carne said: "I am delighted to announce the appointment of Jo as director of network strategy and capacity planning. She brings strategic planning and deep industry knowledge and has developed strong relationships with stakeholders including the department for transport and local authorities."
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