While the Defamation Act primarily deals with civil cases related to defamation (libel or slander), it can also apply to cases of online content that damages someone’s reputation.

Source

Other Legislation from United Kingdom

Act on Cybercrime/Online Intellectual Property Protection

Cooperation and International Efforts

Criminal Code/Law Enforcement

Cybersecurity and Critical Infrastructure Protection

Data Protection and Privacy

Illegal Gambling

Online Hate Speech and Illegal Content