Limited companies in the UK must include certain regulatory information on their websites and in their e-mails from 1 January this year or risk breaching the Companies Act 1985. Every company now has to list its registration number, place of registration and registered office address in legible characters on its website. The information must also appear in e-mails and online order forms. This data is already required on business letters but the duty has been extended to websites, order forms and electronic documents by an amendment to the law.