The blackbyte ransomware group listed Kelly Group on its data leak site on 2023-03-20. Country: GB Sector: Technology Domains named: kelly.co.uk, 1985.established Claim as published on the leak site: Kelly Group has been at the forefront of the telecommunications industry for more than 35 years, installing the very first customer cable television service on 17th September 1985.Established to support the emerging UK cable television market, Kelly Group has grown and diversified to meet the needs of our clients and their customers.