Tax evasion is a crime - that's not news! But since 30 September, all companies - whatever their size - must have reasonable procedures in place to prevent the facilitation of tax evasion.
If a company has an employee, agent, subcontractor or other associated person who has assisted another person to commit tax evasion (UK and non-UK tax), the company may be guilty of the offence and may face unlimited fines. The scope of the offence is intentionally wide.
HMRC's guidance sets out what reasonable procedures might look like, and in particular they include some comments aimed at SMEs. Any business that has not had a look at this yet would be well-advised to do so. If you look at the link there's a great video including HMRC comments and insight.
Corporate criminal offences of failing to prevent the facilitation of tax evasion: is your business ready?