Borthwick, who joined the company in 1997 and was group corporate comms manager, takes over the three-strong comms team from Mike Mitchell with particular responsibility for City and investor relations. She reports to finance director Dean Finch.
Mitchell has taken the position of FirstGroup franchise development director as it prepares to bid to retain the contract for the enlarged Greater Western trains franchise in 2006.
He became the firm’s first corporate affairs director in 1998, joining from jewellery retailer Signet Group where he was investor relations director.
FirstGroup is also currently bidding for the Intercity East Coast and Integrated Kent franchises, having launched its first Scottish rail franchise in October.