The ICO wouldn’t say what it discovered in the raid because the business remains under investigation. The Sheffield business was believed to be illegally selling lists of personal data, including phone numbers, to marketing agencies to make spam calls, the ICO said in a press release. The business would have contravened the law if it didn’t obtain the data legally, or didn’t have the right to sell it.

The ICO says it has imposed £2.3 million ($3.35 million) in fines in the last year on companies that were responsible for 72 million nuisance calls and 2 million spam text messages. It can impose a fine of up to £500,000 on parties who break data laws.

📬 Sign up for the Daily Brief

Our free, fast, and fun briefing on the global economy, delivered every weekday morning.