Littler, from Warrington, has built on his World Championship success by winning the Bahrain Masters and hitting a nine-darter in winning the Players Championship, while he has also competed in Premier League Darts.
He has secured a PDC tour card and climbed to 30th in the world rankings.
His World Championship run saw him beat legends of the game in Raymond van Barneveld and Rob Cross, and his Premier League contests have seen him face former world champions Michael van Gerwen, Gerwyn Price and Smith.
“I just love playing in front of a crowd,” he added.
“I enjoy trying my best to put on a performance and I know I can play against the best. I’ve broken into the top 32, so hopefully I’m here for many years to come.”
