Jay Cameron Ruckley (born September 6, 1998) is a Welsh former child actor, appearing initially in stage productions and later on television. His first acting role came in 2006 where he played Tiny Tim in the Wales Theatre Company's production of A Christmas Carol in December 2006, starring alongside Ron Moody. He also played Jeremy Potts in a production of Chitty Chitty Bang Bang at the Bristol Hippodrome in January of 2007. He was best known for playing Jason Mason in the CBeebies program Grandpa in My Pocket (2009). In 2010 he played Sam Marshall in four episodes of the series Casualty. In 2011 he played Mungo Mole in the series The Sparticle Mystery in the episode "The Sparticle Project" and he also had a cameo voice over role in the short film The Itch of the Golden Nit.

A Grandpa with a magic Shrinking Cap that only his grandson Jason knows about. When he puts the cap on Grandpa shrinks and creates comic mayhem, but somehow Grandpa and Jason always manage to save the day. It’s teamwork!...

An experiment gone wrong causes everyone over the age of 15 to disappear from planet Earth....

Eleven-year-old Beanie's bland life is changed for ever when he is sent on a mission. Armed only with laser lip-gloss and a pair of blend-in pants he has to save his parents from Evil Stella and return the Golden Nit to its rightful place at the heart of the sun, thereby saving the universe....