Grandad Tumble opens his book of memories to tell the tale of Mr Tumble from the day he was born with his red nose already in place through his school days to attending a very serious stage school ...
Will he call in some helpers? Listen to the Tumble Tale to find out. You can also listen to more Mr Tumble Tales and lots of other stories on the CBeebies Storytime App.
Whether he's being himself or his alter-ego Mr Tumble, Justin is a hero amongst toddlers - entertaining them in their masses and earning himself a couple of BAFTAs and an MBE in the process.