'But unfortunately [John] got ill and didn't come out of it.'
John Sullivan, who also wrote hit shows Citizen Smith and Just Good Friends, died at the age of 64 in April 2011 after a battle with viral pneumonia.
Tragic: The sitcom's writer John Sullivan sadly died in April 2011 before he could finish the 30th anniversary script (pictured in 2002)
Only Fools And Horses started in 1981 and ran for seven series as well as 16 hilarious Christmas specials until 2003. It is thought that the 30th anniversary episode would have been the last one.
Del Boy (played by David Jason) and his brother Rodney Trotter (Nicholas Lyndhurst) became millionaires on the show after they found a pocket watch which made them a tidy £6.2million at an auction.