UPC says it won't share data with An Post as part of its crackdown on people not paying for a TV licence.
Earlier, An Post have said it will have access Sky and UPC subscriptions to work out who hasn't paid the fee.
But in a statement, UPC says it's not in a position to give access to its cable subscription data, because it contravenes data protection.
15 percent of the population is evading the payment.
