User blog comment:Milkie/London Sniper/@comment-1900300-20120205045140

Short answer is no. He is a marine trapped in London during the Reaper Invasion. Shepard's actions on Earth seemed to be limited to Vancouver. And as Shepard will be away from Earth for most of the game, the two could not have any interaction aside from the very last mission, at which point the addition of a new character is pointless as you have no chance to develop a rapport and care about him.