Linklaters has named longtime New York partner Tom McGrath as its new U.S. global practice head, replacing Tom Shropshire, who is leaving the firm to take up the position of general counsel at alcoholic beverages giant Diageo.

McGrath, who has led Linklaters’ U.S. antitrust and foreign investment group since joining the firm in 2005, begins his four-year term immediately. In his new role, he will be responsible for driving growth in the U.S., and he will also sit on the firm’s executive committee.