How might sectors that are not regulated by Anti-Money Laundering (AML) Regulations facilitate money laundering?

Background

A better understanding of the different vulnerabilities would support policy development and
operational activity to be focused on the areas that pose the greatest risk. This would be valuable both at a strategic level and when considering activity within different sectors of the economy.

The ARIs in this question group focus on the areas where further information would be particularly valuable to build on our existing understanding of the vulnerabilities in the UK. The key question relevant across all crime types here would be what the key vulnerabilities are that can be exploited by criminals engaging in economic crime.