The m3rx ransomware group listed boxtopia.co.uk on its data leak site on 2026-04-29. Country: GB Sector: Professional Services Domains named: boxtopia.co.uk Claim as published on the leak site: +44 1476576090 . Boxtopia is the UK's leading supplier of custom cardboard boxes and printed boxes, specializing in short runs for small businesses with no minimum order. Stolen: 166gb 280k files