Possible Clues:

• Sewers, maybe
• Designers bring gold into formal wear
• Fellow employees of 27-Across
• These sewers will make one sick in a sort of a way
• Craftsmen who suffer in the hills
• Alteration makers
• Some sewers
• It's a Lord mostly solving the puzzle of 12 of these
• Then woman leaves, and seamen, heading off in cutters
• Helpers of the ill-suited?