David Ankrum was the voice actor for Wedge Antilles in Star Wars: Episode IV A New Hope. He overdubbed both Denis Lawson and Colin Higgins throughout the film.
40 years after voicing the role of Wedge Antilles in Star Wars:A New Hope, the voice of Wedge is back in Rogue One! The PA announcer on Yavin redirecting the Rebel fighters to the crucial battle scene on Scarif. And ending his speech with the classic line "May the force be with you"!
(edited from: starwars.wikia.com and imdb.com)