The Criminal Finances Act came into force on 30th September 2017.
Under the Act, businesses could be criminally liable for the actions of employees who assist tax evasion by others acting in the capacity of an associated person, for example agents, contractors and sub-contractors.
For further reading please click on the below:
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/560120/Tackling_tax_evasion_-_Draft_government_guidance_for_the_corporate_offence_of_failure_to_prevent_the_criminal_facilitation_of_tax_evasion.pdf