Oliver Claffey

is an English professional wrestler and mixed martial artist. He is currently signed to WWE, where he performs on the Raw brand under the ring name Gentleman Jack Gallagher. He is perhaps best known for his appearances at Futureshock Wrestling and Grand Pro Wrestling, where he has won the FSW Championship and GPW British Championship. He is also an accomplished tag team competitor, winning the Futureshock Tag Team Championship with Alex Cyanide as Lethal Dose. Gallagher was trained by Alex Shane and the Futureshock staff. He made his professional wrestling debut at the age of 16 on 4 November 2006 at Futureshock #11, under the ring name Jack Toxic, teaming up with Alex Cyanide, Danny Hope, and Kris Travis. They defeated El Ligero, Charity, Faith, and Jamal Lewis. He also trained in Grappling, a catch wrestling style, under Billy Robinson at the Snake Pit in Wigan, Greater Manchester.

Independent circuit Lethal Dose (2007-2009) From the beginning of 2007, Toxic and Cyanide would continue to team up and eventually became Lethal Dose. They became a regular attraction at Futureshock, appearing on many shows. The team would have their first title shot at Grand Pro Wrestling's That's Entertainment when they took on WKD for the GPW Tag Team Championship. The team would travel to Real Deal Wrestling where in February and April, had to chances to become the RDW Tag Team Champions but lost both times. They then went to Hull to wrestle for New Generation Wrestling where they won all their matches. With this run of success, they returned to Futureshock at Futureshock #27 and defeated three other teams to become the first FSW Tag Team Champions. However, they would lose the titles to The Doogooders at Futureshock #29. they returned to GPW at Livin' On The Edge to take part in a number one contendership four-way elimination match and lost. For the rest of 2009, they continued to team up but would find little championship success and split up.