This law makes it illegal to send or post electronic communications (including emails, social media messages, and posts) with the intention of causing distress or anxiety to the recipient.

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