The Criminal Liability Act 1977 is a UK legislation that governs offences relating to property, such as criminal damage, arson, and handling stolen goods. This act introduced the concept of reckless behaviour as a requirement to establish liability for certain crimes, such as vandalism or arson. The Act also contains provisions to deal with threats to destroy or damage property and added new offences concerning explosives. Additionally, it requires lawful excuses for damage to property, holding individuals responsible for their actions even if unforeseen consequences arise.