The 40 Recommendations provide a complete set of countermeasures against money laundering and terrorist financing, covering
* the identification of risks and development of appropriate policies;
* the criminal justice system and law enforcement;
* the financial system and its regulation;
* the transparency of legal persons and arrangements; and
* international cooperation.

In accordance with Financial Action Task Force (FATF) standards [1][2], when the minimum AML requirements of the host country where a financial institution (Fl) operates are less strict than those of the Fl's home country, the Fl is required to ensure that their branches and majority-owned subsidiaries in host countries implement the requirements of the home country, to the extent that host country laws and regulations permit. This means that the Fl should not impose more strict requirements on host country branches, disregarding if host country laws and regulation permit such action, and should not close down its operations in the host countries where minimum AML requirements are less strict than those of the home country. However, the Fl should always apply additional measures on their branches and majority-owned subsidiaries in host countries to manage the money laundering and terrorist financing risk overseas.

The clients are not willing to have their names provided to the bank is a red flag that should stop the agent from discussing this potential purchase further, as this could indicate that the clients are trying to evade customer due diligence (CDD) or know your customer (KYC) requirements, or hide their beneficial ownership or source of funds. According to the U.K. Money Laundering Regulations 2017, real estate agents must conduct CDD on their customers and any beneficial owners, and verify their identity and address1. The
U.K. also has a register of people with significant control (PSC) over companies, which requires companies to disclose their beneficial owners2. The use of private companies and wire transfers could also be a sign of layering, a money laundering technique that involves moving funds through multiple accounts or entities to obscure their origin3.
References:
1: U.K. Government, Money Laundering Regulations 2017, Part 2: Customer Due Diligence, Section 5-6 2: U.
K. Government, People with significant control (PSC) register, Overview 3: ACAMS CAMS Certification Study Guide, 6th Edition, Chapter 1: Risks and Methods of Money Laundering and Terrorist Financing, Page
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Sanctions screening and transaction monitoring rules are two of the most common controls that FIs use to identify suspicious money-laundering activity. Sanctions screening is the process of checking customers, transactions, and counterparties against various lists of sanctioned individuals, entities, and countries issued by national and international authorities. Sanctions screening helps FIs to avoid doing business with or facilitating the activities of those who are involved in terrorism, proliferation, human rights violations, or other criminal activities. Transaction monitoring rules are the criteria or scenarios that FIs use to detect unusual or potentially suspicious patterns of transactions or behaviors of customers or accounts. Transaction monitoring rules help FIs to identify transactions that deviate from the expected norms, such as large cash deposits, frequent wire transfers, or transactions with high-risk jurisdictions. Transaction monitoring rules also help FIs to comply with their reporting obligations, such as filing Suspicious Activity Reports (SARs) or Currency Transaction Reports (CTRs).
References: = ACAMS CAMS Certification Video Training Course, Chapter 4: Developing an Effective Anti-Money Laundering Program, Section 4.2: Customer Identification Program (CIP) and Customer Due Diligence (CDD); Money laundering and terrorist financing, Section: Anti Money Laundering (AML) regulations; The Three Stages Of Money Laundering And How Money Laundering Works, Section: How to Prevent Money Laundering.