The UK is preparing to formally classify Microsoft, Google, Amazon, and Oracle as Critical Third Parties under a regulatory framework designed to keep the financial system from collapsing when a single cloud provider sneezes. The move, enabled by the Financial Services and Markets Act 2023, would give UK regulators direct oversight of the tech giants that quietly run the plumbing behind banks, brokerages, and yes, crypto exchanges.

What the CTP framework actually means

The Critical Third Party oversight regime became effective in January 2025 under FSMA 2023. It gives UK financial regulators, including the Bank of England, FCA, and PRA, the power to directly oversee technology providers that the financial sector can’t function without.

The framework targets cloud computing providers, data analytics firms, and other technology companies whose services are so deeply embedded in financial infrastructure that their failure would pose systemic risk. Microsoft, Google, Amazon, and Oracle are the obvious candidates, given their dominant positions in enterprise cloud services.

The EU has already moved on this front. In November 2025, European regulators designated 19 technology providers as critical ICT third-party providers under the Digital Operational Resilience Act, known as DORA. That list included the European branches of Google Cloud, AWS, and Microsoft. As of mid-2026, the UK has yet to formally designate any firms, with potential designations expected by late 2026.

Why crypto should be paying attention

An AWS outage demonstrated exactly how dependent the digital asset ecosystem is on centralized cloud infrastructure when it knocked Coinbase offline alongside traditional financial institutions. Crypto exchanges, DeFi front-ends, wallet providers, and blockchain node operators all rely heavily on AWS, Google Cloud, and Microsoft Azure. If these companies come under stricter regulatory oversight in the UK, the compliance requirements and operational standards they must meet will inevitably trickle down to their crypto clients.

For crypto firms operating in the UK, this creates a second-order regulatory effect. Even if you’re not directly regulated under the CTP framework, your infrastructure provider is. That means potential changes to service level agreements, new reporting requirements, and possibly higher costs as cloud providers pass along compliance expenses.

The competitive and market implications

The gap between UK and EU action on this front is worth watching. While the EU designated its critical providers in November 2025, the UK’s formal designations could potentially occur by late 2026. Financial firms and crypto companies operating across both jurisdictions face a patchwork of oversight requirements, where a cloud provider might be a designated critical entity in Brussels but not yet in London.

For the cloud providers themselves, designation as a CTP adds compliance costs but also creates a moat. Once Microsoft, Google, Amazon, and Oracle are designated and comply with the oversight requirements, smaller cloud providers face a higher bar to serve the financial sector, potentially entrenching the major providers further—a somewhat ironic outcome for a framework designed to address concentration risk.