Liam made his debut in the late 1980s drawing Judge Dredd for 2000AD. Thereafter he began working mainly in the United States on books as diverse as the X-Men, the Hulk, Spider-Man, Venom, Man-Thing, Superman, Batman, and many more.
In 2004 Sharp set up his own company, MamTor™ Publishing, launching the award-winning anthology Event Horizon, and the prestigious collaboration with Mother (London) Advertising, Four Feet From a Rat.
Liam also worked on designs for the movies Lost in Space & Small Soldiers.
His critically acclaimed first novel GOD KILLERS: MACHIVARIUS POINT & OTHER TALES was published in 2008 with a second edition in 2009.
