This Practice Note explains the money laundering offence of being involved in an arrangement resulting in the acquisition, retention, use or control of criminal property by another person under section 328 of the Proceeds of Crime Act 2002 (POCA 2002). This is one of the three principle money laundering offences under POCA 2002. It deals with the necessary elements of the arrangement offence, including what is meant by criminal property and the definition of criminal conduct for the purposes of money laundering. It also covers possible defences to the POCA 2002, s 328 offence, including making authorised disclosures (known as suspicious activity reports (SARs)) to obtain consent for transactions as part of anti-money laundering measures, and touches upon what is the threshold amount under POCA 2002, s 339A for the purposes of a defence afforded to a deposit-taking body and other regulated sector businesses. It also explains sentencing for this money laundering offence.