Repeated thanks to all entrants.
My comments are below. The result is nethermost.
Luciano
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Rob:
Starting with nothing, flashy Londoners so crazily create a rags-to-riches comedy (4,5,3,6)
Answer = ONLY FOOLS AND HORSES
O + FLASHYLONDONERSSO anag; def = a rags-to-riches comedy
-- Very well done. Great find with the anagram. The clue as a whole is put together in a way that describes the show splendidly.
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Mark:
Work hit (with coffee) (3,6)
Answer = THE OFFICE
HITCOFFEE anag; &lit
-- Very good. Succinct and creative. And, again, it describes the show well.
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Duke:
Allies from monsters getting just a touch of rum (6)
Answer = FRIENDS
F(R)IENDS; def = allies
-- Nothing to complain about here, apart from the surface reading, which is not the most elegant.
Ha! -- and, as an afterthought, yecch, oddly (5)
Answer = PSYCH
PS + Y(e)C(c)H; def = psych!
-- The definition I like. The wordplay is so-so ('yecch' is a bit awkward). The surface reading is not the best.
Cab from ends of West Napa, by rear of Mondavi (4)
Answer = TAXI
T+A+ X (by) + I; def = cab
--Nice use of 'by'. Everything else works, apart from the surface reading.
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David:
CJ the DJ fall and rise thereof (8,6)
Answer = (THE FALL AND RISE OF) REGINALD PERRIN
CJ a character in the show; not sure of the DJ reference.
-- Still not sure about the DJ reference. With CJ and 'fall and rise', the answer is a bit obvious (to me), even without wordplay.
Victor Meldrew and Lonesome George, both! (3,4,2,3,5)
Answer = ONE FOOT IN THE GRAVE
Victor Meldrew one of the two main characters in the show; opening credits of show feature a tortoise (of which creature Lonesome George is an example)
-- Again, not much wordplay going on here. Victor Meldrew gives the game away immediately (to me).
David Akenhead and Robert Akenhead (rupto robore nati) (5,8)
Answer = ACORN ANTIQUES
As per David: translation of our motto is "born from a split oak" (with allusion to acorn)
-- Much too obscure.
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Bonus clues:
David:
Wendy Craig was all of a flutter (11)
Answer = BUTTERFLIES
Clue defines itself.
-- Fair enough if you know the show.
Jaipur gem, offering a rarefied species of Bombay duck! (3,4,6,8,5)
Answer = THE MOST EXOTIC MARIGOLD HOTEL
-- Again, very obscure, with little to no help for the solver.
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The winner is Rob. Mark is second.