Finding the Companies House phone number is rarely as straightforward as it should be. The official contact details change, wait times vary, and for most SME queries — especially those involving company registration, filing history, or director checks — there are faster routes that skip the phone queue entirely.
This article covers the Companies House phone number, when calling actually makes sense, what alternatives exist, and how SMEs can handle the administrative side of running a business without losing hours to hold music.
Companies House Phone Number and Contact Details
The Companies House phone number for general enquiries is 0303 1234 500. Lines are open Monday to Friday, 8:30am to 6:00pm. For Welsh-language enquiries, the number is 0303 1234 501. If you are calling from outside the UK, dial +44 303 1234 500.
Companies House is the UK's registrar of companies, responsible for incorporating businesses, maintaining the public register, and storing statutory filings including annual accounts and confirmation statements. It operates under the Companies Act 2006 and is an executive agency of the Department for Business and Trade.
The snippet answer that most SMEs actually need: the Companies House phone number is 0303 1234 500, available Monday to Friday, 8:30am to 6:00pm. Most queries — including company searches, filing history, and registered address lookups — can be resolved faster via the Companies House WebFiling service or the Find and update company information portal at find-and-update.company-information.service.gov.uk.
You can also contact Companies House by post at Crown Way, Cardiff, CF14 3UZ, or by email through their online contact form. For urgent matters related to fraud or company identity theft, a dedicated team handles those separately from general enquiries.
When Calling the Companies House Number Actually Makes Sense
Having run a marketing agency for nine years, we fielded a lot of calls from SME founders who had spent the morning on hold to Companies House when they didn't need to be. The phone line is genuinely useful in specific situations — and genuinely unnecessary in most others.
Call the Companies House phone number when you have a complex filing dispute, an issue with a rejected document, or a problem that the online portal cannot resolve. If you have received a compliance notice or a penalty for late filing, speaking to someone directly is often the fastest way to understand your options.
Do not call if you simply need to look up a company number, check a filing deadline, or download a document. The online register handles all of that, usually within seconds. The Company House Number: What SMEs Actually Need guide covers those lookup processes in more detail.
Wait times on the phone line can be significant during peak periods — typically the January filing season and the weeks around confirmation statement deadlines. If your matter is not urgent, the email contact route often gets a response within two to three working days and creates a written record, which is worth having.
What Companies House Actually Handles (and What It Doesn't)
This is a distinction that catches a lot of SME owners out. Companies House maintains the public register — it does not regulate businesses, handle tax matters, or deal with employment disputes. Those sit with HMRC, the Financial Conduct Authority, and other bodies respectively.
Companies House processes: company incorporations, name changes, registered office address changes, director appointments and resignations, filing of annual accounts, confirmation statements, and dissolution applications. It also flags discrepancies and, since the Economic Crime and Corporate Transparency Act 2023, has increased powers to query and reject filings it considers suspicious.
HMRC handles corporation tax, VAT, PAYE, and self-assessment. If you call the Companies House phone number asking about a tax bill, you will be redirected. Knowing which body handles what saves time before you pick up the phone.
For SMEs that operate as limited companies, understanding the distinction between Companies House obligations and HMRC obligations is fundamental. Late filing penalties come from both — but they are separate processes with separate deadlines and separate appeal routes.
Companies House Contact Options Compared
Below is a comparison of the main contact methods, their typical response times, and when to use each one.
| Contact Method | Detail | Typical Response | Best For |
|---|---|---|---|
| Phone: 0303 1234 500 | Mon–Fri, 8:30am–6:00pm | Immediate (subject to wait) | Disputes, rejected filings, urgent queries |
| Online contact form | Via gov.uk portal | 2–3 working days | Non-urgent queries, written record needed |
| WebFiling portal | 24/7 self-service | Instant | Filing accounts, confirmation statements |
| Find and update portal | 24/7 public register | Instant | Company searches, document downloads |
| Post: Crown Way, Cardiff CF14 3UZ | Standard post | 5–10 working days | Formal correspondence, document submission |
For the majority of day-to-day SME needs, the online portals are faster and leave a clearer audit trail than a phone conversation.
What SMEs Actually Spend Time On Instead of Companies House
Once you have sorted your Companies House filing obligations — and for most limited companies that means an annual accounts submission and a confirmation statement — the ongoing administrative burden tends to shift elsewhere. The area where we consistently saw SME founders losing the most time, and money, was paid advertising.
Google Ads in particular tends to drift. Campaigns that performed well in Q1 can become inefficient by Q3 without anyone noticing, because the account keeps spending and the business keeps running. Nobody flags it. Understanding how much Google Ads actually costs SMEs is a useful starting point for benchmarking whether your spend is working as hard as it should be.
This is where Overtime operates. Rather than leaving a Google Ads account to run on autopilot between agency check-ins, the Overtime AI agent manages campaigns on a daily basis — adjusting bids, pausing underperforming keywords, reallocating budget toward what is converting, and sending plain-English summaries so you can see what changed and why.
For SMEs that are registered at Companies House and generating revenue, the administrative compliance side of the business is largely fixed cost. The advertising side is variable — and that variability is where active management creates a material difference.
Common Mistakes SMEs Make With Statutory Filings
The most common issue we saw from agency clients was missed confirmation statement deadlines. Companies House sends a reminder, but it goes to the registered email address — which is sometimes an old address from when the company was first incorporated. If that inbox is not monitored, the reminder disappears and the penalty arrives instead.
The second common mistake is filing accounts to Companies House that do not match the figures submitted to HMRC. The two filings are separate, but they need to be consistent. An accountant handles this in most cases, but for very small companies filing their own accounts, the discrepancy can create compliance queries.
The third is failing to update the registered office address after moving premises. Companies House correspondence goes to the registered address — if it is wrong, you may miss formal notices. Updating it takes minutes through the online portal and costs nothing.
None of these require a call to the Companies House phone number to resolve after the fact — but they do require someone paying attention before the deadline passes. The Call Companies House guide covers escalation routes if you do end up needing to contact them about a missed filing.
How Staying Compliant Frees Up Marketing Budget
There is a less obvious connection between statutory compliance and advertising spend that is worth naming. Companies that carry late filing penalties, outstanding charges, or inaccurate register entries can find that their credit profile and supplier relationships are affected — which indirectly constrains the budget available for growth activity, including paid search.
Keeping Companies House records clean is not just a legal obligation. It is basic business hygiene that affects how the company presents to investors, partners, and commercial lenders. For SMEs using Google Ads as a primary acquisition channel, that matters — because a constrained budget managed poorly is worse than a smaller budget managed well.
If you are at the stage where advertising spend is a meaningful line item, it is worth reading about how to fix high cost per acquisition in Google Ads, which covers the specific account-level decisions that tend to drive inefficiency.
For SMEs who want their Google Ads account managed with the same level of attention they give to statutory obligations, Overtime's pricing structure is built around making active management accessible without agency-level fees.
The Companies House Phone Number: A Final Note for 2026
As of 2026, Companies House continues to expand its digital services following the Economic Crime and Corporate Transparency Act reforms. More filings are moving to mandatory digital submission, and the online portal is increasingly the primary interface for most SME interactions. The Companies House phone number remains available for complex queries, but the direction of travel is clearly toward self-service digital tools for standard matters.
If you run a limited company and want to ensure your statutory obligations are in order, bookmark the Companies House WebFiling service and set a calendar reminder two months before your accounts and confirmation statement deadlines. That one habit eliminates most of the situations that lead people to call the Companies House phone number in the first place.
Once the compliance side is under control, the next question for most growing SMEs is whether their advertising spend is being managed with the same rigour. If it is not, the Overtime Google Ads page explains exactly what active AI-driven management looks like in practice — and what it replaces.
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FAQ
What is the Companies House phone number?
The Companies House phone number for general enquiries is 0303 1234 500. Lines are open Monday to Friday, 8:30am to 6:00pm. For Welsh-language enquiries, call 0303 1234 501.
What can I contact Companies House about by phone?
The phone line is best used for filing disputes, rejected document queries, compliance notices, and issues that cannot be resolved through the online portal. Most standard queries — including company searches and document downloads — are handled faster through the online register.
How long does Companies House take to respond to emails?
Email and online contact form submissions to Companies House typically receive a response within two to three working days. During peak filing periods, such as January, response times may be longer, so the phone line is preferable for urgent matters.
Should I call Companies House or use the online portal?
For the majority of SME needs — filing confirmation statements, downloading documents, checking filing history — the online portal is faster and leaves a written record. Call the Companies House phone number only when you have a complex or disputed matter that requires a direct conversation.
For more on this, see our guide: Company House Contact Number: What SMEs Actually Need.
Do I need to contact Companies House if I change my business address?
Yes. If your registered office address changes, you must update it with Companies House. This can be done online through the WebFiling portal and takes effect immediately. Failure to update it means official correspondence, including penalty notices, may not reach you.