There are two types of corked wine:
Cork taint results in a wine tasting less fruity. This is a result of chemical spoilage from TCA (a naturally occurring chemical) in the cork.
Oxidised – smelling and tasting like vinegar – very distinct, resulting from oxidation through a cork not maintaining a perfect seal.
If customers have tried a wine that is simply not to their taste, is faulty or for any other reason let Laithwaites know.