Between 2023 and Q1 2025, the finance sector reported the highest number of GDPR data breaches in the UK, with 3,820 cases. This includes 2,175 reported specifically by finance, insurance, and credit companies. Other sectors with high breach numbers include education, childcare, retail, and manufacturing. Data breaches range from sending emails to the wrong recipients to cyberattacks, and they are more common in sectors that hold sensitive data. Most incidents are reported in the fourth quarter of each year.
https://www.financialreporter.co.uk/finance-sector-most-affected-by-gdpr-data-breaches.html