Supervised or Suspended – are Banks the new gate keepers?

Increasingly customers who are regulated businesses under the Money Laundering, Terrorist Financing and Transfer of Funds (Information on the Payer) Regulations 2017, commonly referred to as the Money Laundering Regulations (MLRs) are being asked to provide proof of Anti-Money Laundering (AML) supervision. This trend is driven by tougher enforcement across multiple regulators and recent high‑profile cases showing what happens when firms fail to check a client’s regulatory status.

The UK’s AML framework is becoming more centralised and data‑driven. With reforms moving towards a single supervisor, the Financial Conduct Authority, (FCA) for professional services, banks will face stronger expectations to verify AML‑supervision status, not just at onboarding, but throughout the customer relationship. 

Banks are effectively becoming regulatory gatekeepers. They can no longer rely on a customer’s statements, they must verify registration, permissions and compliance.

Why Banks Are Asking for AML-Supervision Details

Banks are under growing pressure to verify that customers operating in regulated sectors such as estate agency, accountancy, art market participants, and trust/company service providers are properly registered for AML supervision.

Two forces are driving this:

a) FCA enforcement and expectations

The FCA’s £42m fine against Barclays in July 2025 in relation to their client WealthTek highlighted that banks must verify whether a customer has the regulatory permissions needed to operate. 

Barclays’ failing has made banks far more cautious. They now routinely request AML‑supervision details to avoid similar failings.

b) HMRC crackdowns on unregistered trading

HMRC’s most recent enforcement lists show that the majority of AML penalties are issued to businesses trading while unregistered, with 332 of 369 penalties in one period involving unregistered activity. Estate agents and accountancy service providers feature heavily. 

Banks are aware of these lists and increasingly treat missing AML registration as a red flag.

Once bitten, twice shy

The FCA’s enforcement action against Barclays in the WealthTek matter, part of a £42 million penalty issued for serious financial‑crime control failings, provides a clear illustration of the consequences a bank faces when they fail to verify a client’s regulatory permissions. 

In the WealthTek case, Barclays opened a client money account for without checking whether WealthTek was authorised to hold client money, even though a quick look at the FCA’s Financial Services Register would have shown it lacked permission. 

As a result of this failing, £34 million was deposited into an account that should never have existed, exposing both the bank and their customers to significant money‑laundering risk. 

The FCA fined Barclays £42 million across two related matters and made it explicit that basic permissions‑checking is no longer optional but is an absolute requirement of responsible financial‑crime risk management. 

This enforcement decision has prompted banks across the UK to adopt a more defensive posture, verifying AML supervision, permissions, and regulatory status as standard practice, rather than relying on customer assurances.

Impact on Businesses — Especially the Unregistered

a) Banking disruption and freezes

If a business cannot produce AML‑supervision details when asked, banks may pause services or restrict accounts while they investigate, which can shut down trading immediately. In practice, firms will often apply internal restrictions (for example, during enhanced due diligence or after submitting a suspicious activity report) and these bank‑led freezes are not tied to a court order or a fixed statutory timeframe, unlike Account Freezing Orders (“AFOs”), which require a Magistrates’ Court order and operate within defined legal limits (typically up to two years) under the Proceeds of Crime Act 2020 (“POCA”). 

This asymmetry makes bank‑initiated restrictions harder to predict and manage day‑to‑day. At the same time, AFOs have risen sharply in recent years, with hundreds of cases and hundreds of millions of pounds frozen on AML grounds—underscoring the wider enforcement climate that is driving banks’ more conservative stance

b) Loss of access to banking

Once a business is flagged by its bank, access to its account can become severely restricted, making routine trading difficult or impossible. When a company relies on a single operating account, even a temporary block on payments or withdrawals can bring activity to a standstill, cutting off the ability to pay suppliers, staff, or tax obligations. In the current enforcement climate, where AML‑related account freezes have risen sharply, with funds locked in hundreds of cases due to financial‑crime concerns, losing access to core banking services can be commercially fatal for smaller firms that lack alternative banking arrangements.

c) Reputational and commercial consequences

Appearing on a regulator’s non‑compliance list publicly naming businesses that failed to register can also deter banks and counterparties. 

What Businesses Should Do Now

• Confirm if you need AML supervision and register immediately if not.
• Keep proof of registration (e.g., HMRC MLR number) accessible for bank reviews.
• Maintain an AML compliance pack: policies, firm‑wide risk assessment, training records, and Customer Due Diligence (“CDD”) templates.
• Check your own counterparties’ registration status, especially in the art market and property sectors, where this is mandatory. 

In 2026, AML registration is no longer a regulatory technicality, it is a requirement for staying banked, credible, and operational.