Speaking backstage at the National Television Awards after picking up a gong for QI, Davies explained that production had been "hampered" by the weather.
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"We've lost days filming by the snow," he said.
"I've got to go [on set] tomorrow morning, really early. And I should really be wielding this [award] in some seedy nightclub, but I can't do that!"
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Davies added: "It is ridiculous. Sheridan Smith has to have someone with a bag of rock salt spraying it in front of her wherever she walks."
However, Davies refused to reveal too many clues about what viewers can expect from the Easter special, which is titled 'The Clue of the Savant's Thumb'.
[Left: Rik Mayall / Right: Joanna Lumley]
"There's a dead body in a room," he said. "And Joanna Lumley's in it. And Rik Mayall's in it. And it's very good!"
Sarah Alexander and Nigel Planer are among the other guest stars who will appear in the 90-minute special.
National Television Awards 2013 winners - photo gallery:
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