regretfully I have to inform you that your persistent neglection of your duty as a writer of fiction is no longer tolerable for this (or any other kind of thinkable, tolerable, sufferable) universe.
For the record: your last work of fiction, 'The Stars' Tennis Balls', was published as long ago as 2001! 2-0-0-1! (I feel tempted to underline this unbelievable fact by the use of three exclamation marks!)
2001!!! (There you go)
Since that year you have chosen to publish, amongst others, notably your guide to writing poetry and an account of your travels in the United States. Now, it is of course debatable if there is a sufficient amount of guide-to-poetry and travel books available to readers (I tend to answer this question with a decisive 'NO!' when these two forms are penned by you and would of course welcome any further additions to both genres).
However, there is still another far more serious topic which can really not be a question at all (ask anybody on this forum) :
There can never be enough fiction books written by Stephen Fry!
So I would respectfully suggest that you settle comfortably in your study (or wherever you prefer to write your books) and start right now a new work of fiction.
Believe me, this planet badly needs it!