There’s a regulatory shift happening quietly in the background of UK business life that deserves far more attention than it’s getting. The Companies House reform brought in under the Economic Crime and Corporate Transparency Act 2023 is not a minor tweak to filing deadlines. It is the most significant overhaul of how companies register, verify their identities, and disclose ownership in decades. And for tech startups, formation agents, and early-stage investors, the practical implications are already landing.
The Act received Royal Assent in October 2023, but its powers are being rolled out in phases across 2025 and 2026. That phased approach has given some businesses a false sense of distance from it. The truth is, if you’re incorporating, raising capital, or managing a cap table with international shareholders right now, this touches you directly.
What the Economic Crime Act Actually Changed at Companies House
Companies House was, for a long time, essentially a passive registry. You filed your documents, paid your fee, and that was largely the end of the state’s involvement. The agency had no meaningful power to verify the information it received or to query suspicious filings. That made it a reasonably attractive vehicle for those who wanted to obscure corporate structures, and the government’s own estimates suggested hundreds of thousands of registered companies had dubious or unverifiable beneficial ownership data on record.
The Act changed the agency’s mandate fundamentally. Companies House now has the power to query, reject, and remove information it believes to be incorrect. It can cross-reference data with HMRC, the Home Office, and other government databases. More importantly for anyone actually running a business, it introduced mandatory identity verification for all company directors, persons with significant control (PSCs), and anyone filing on behalf of a company.
Identity Verification: The Part That’s Catching People Off Guard
The identity verification requirement is the operational change with the most immediate friction. From autumn 2025 onwards, new company directors must verify their identity before or shortly after appointment. Existing directors and PSCs have a transitional window, but that window is closing. Verification involves confirming identity against documents such as a passport or driving licence through GOV.UK or an Authorised Corporate Service Provider (ACSP).
For UK-based founders, this is annoying but manageable. For startups with international co-founders or non-resident directors, it creates genuine complexity. A director based in Singapore or Berlin still needs to verify their identity through a recognised process. Formation agents who previously handled all of this at arm’s length now need ACSP status themselves to continue offering that service legally, which means their own compliance overhead has shot up considerably.
Beneficial Ownership Disclosure: Why Investors Are Paying Attention
The reforms tighten the rules around the Register of Persons with Significant Control. Previously, there was meaningful flexibility in how PSC data was recorded and what counted as adequate verification of control. That flexibility has been substantially reduced. Anyone with more than 25% of shares or voting rights, or who exercises significant influence or control, must now be registered with accurate, verifiable data.
For venture-backed startups, this creates interesting dynamics at each funding round. As cap tables evolve, the PSC register needs to stay current. Nominee shareholder arrangements, common in some early-stage structures, now attract far more scrutiny. Investors putting money into UK companies are increasingly asking their legal teams to run proper due diligence on the PSC register before signing term sheets, precisely because the data is now supposed to be trustworthy.
There’s also a reputational dimension. A clean, accurate Companies House record is becoming a quiet signal of corporate hygiene. Sophisticated angels and institutional VCs who used to treat the register as a formality are treating it more seriously as a first-pass check on a founding team’s governance instincts.
The Filing Obligation Changes That Affect Tech Companies Specifically
Beyond identity and ownership, the Act introduces changes to how accounts and confirmation statements are filed. Companies House is moving towards a fully digitised filing regime, with mandatory digital tagging for financial data using iXBRL format becoming the expected standard. For micro-entities and small companies that previously filed abbreviated paper accounts, this is a meaningful operational change.
Many early-stage tech companies have historically used the small company exemptions to keep their accounts filings minimal. The new rules don’t eliminate those exemptions, but the information that does get filed must now meet higher accuracy standards and will be subject to greater scrutiny. A company that files accounts inconsistent with its HMRC records, for instance, may now find Companies House flagging the discrepancy rather than simply accepting it.
For software-as-a-service businesses that operate across jurisdictions, there’s an added layer of complexity around registered office requirements. The Act now mandates that a registered office must be a physical address where documents can genuinely be served, not simply a PO box or virtual address service. This catches out quite a few early-stage founders who set up with a cheap registered office and then never check the post.
Formation Agents Are Having to Reinvent Their Offering
The impact on the formation agent market is significant. Companies that have built businesses around quick, frictionless company formation are now required to become ACSPs if they want to continue filing on behalf of clients. That requires registering with Companies House, meeting fit-and-proper-person requirements, and taking on anti-money laundering obligations that were previously the domain of solicitors and accountants.
Smaller formation agents are finding this transition genuinely difficult. The compliance costs are non-trivial, and the regulatory expectations around client due diligence are substantially higher than anything they were doing before. Some are exiting the market entirely. Others are pivoting towards software platforms that automate compliance checks, essentially becoming fintech-adjacent businesses rather than simple filing services.
What Startups and Their Advisers Should Actually Do Now
If you’re a founder, the immediate actions are reasonably clear. Verify your identity through GOV.UK or via an ACSP before the window closes for existing directors. Audit your PSC register to make sure it accurately reflects your current cap table and governance arrangements. Check that your registered office address is genuinely serviceable. And if you’re using a formation agent or company secretary service, confirm they have obtained ACSP status.
For investors, particularly those running early-stage funds or acting as angels across multiple portfolio companies, the practical ask is similar: treat Companies House data as a live compliance document rather than a historical filing record. The days of setting it up at incorporation and forgetting about it are over.
It’s worth noting that the reform also has implications well beyond the obvious corporate admin layer. When office managers think about what makes a business look credible and well-run, the details matter across every touchpoint, from clean corporate records to the physical environment where teams work. Speaking to one operations lead at a London fintech recently, she mentioned that getting their registered office squared away sat on the same checklist as sorting the lease, updating the signage, and replacing the wooden venetian blinds in the boardroom. Small things, but together they signal that a business is running itself properly.
The deeper point about Companies House reform is that it shifts the UK from a disclosure-on-trust model to a disclosure-with-verification model. That is a meaningful philosophical change in how the state relates to corporate entities. For most legitimate businesses, the compliance burden is manageable. For anyone who was relying on the old system’s laxness, the calculation has changed entirely.