[2] Wall began his career in 1976, at the age of 19 contributing to the music weekly magazine Sounds, where he wrote about punk and the new wave, and then rockabilly, funk, new romantic and, eventually, hard rock and heavy metal.
In 1979, at the age of 21, he left music journalism to become the partner in his own PR firm Heavy Publicity, where he oversaw press campaigns for artists such as Black Sabbath, Journey, REO Speedwagon, Thin Lizzy, Ultravox, The Damned, Dire Straits and several others.
In the early 1980s he also worked at Virgin Records as press officer for such artists as Gillan, The Human League, Simple Minds, Japan and others.
Wall has written many biographies of musicians and bands including Ozzy Osbourne, Iron Maiden, AC/DC, Metallica and Guns N' Roses.
He also co-hosted a podcast called "Dead Rock Stars" with fellow writer Joel McIver, which ran for 23 episodes in 2018.