2WL is right...
Tolkien is king of fantasy, but this is DICKENS...
DWL clearly forgot about good old Mr. Shakespeare, because we ALL know that he's the greatest English writer of all-time, he was just too cool to even bother advancing, that's how great he is. :p
(I'll leave "greatest of all-time period" vacant, lest we start the Vergil crowd chanting again...can we at least agree Vergil-ites that Shakespeare and Vergil both easily beat Tolkien, and that both beat Dickens, though that's a harder fight, at least?)
All that being said...it's still DICKENS.
After Shakespeare, the single greatest creator of characters in the English language.
Undisputed Heavyweight Champion of the Victorian Age (George Eliot is probably the only potential rival there, but her canon can't beat his...said Dr. Freud.) ;)
Arguably the greatest novelist in the English language.
Arguably the greatest novelist of the 19th century PERIOD (I'd opt for Dostoyevsky there, though the great man himself said he was inspired and influenced by Dickens.)
Charles Dickens is a Top 15 All-Time Writer...probably Top 10.
Tolkien would probably crack the Top 50, I DOUBT I would put him higher than that set, Top 40...I'm pretty sure between Greece, Rome, Dante, Chaucer, Shakespeare and Marlowe, Cervantes, Milton and then English, French, German, Russian, Irish, American and other writers from 1650 or so on...
Poets, playwrights, novelists--
Pretty sure I can name 49 that top Tolkien, easily.