Johnson has been described as a “winner” who has a raw defending style that allows him to get forward. He has a good pace and can be attack-minded. In 2007, he was arrested with a partner trying to steal a toilet seat, he was consequently released and had to pay a fine of £80. In 2007, he set up a soccer school with a former West Ham United co-player, Sam Taylor. Based in the area where he grew up, Johnson’s focus is to scout talent, train and develop them. He already has a former student at West Ham United.