Finding the Companies House contact number is rarely straightforward. The website buries contact options, phone lines have limited hours, and if you are running a business with time-sensitive filing obligations, that friction costs you. Most SME owners searching for the company house contact number are not browsing — they are trying to fix something specific, right now.
This article gives you the direct contact details for Companies House, explains what each channel is actually useful for, and covers the administrative groundwork that keeps your SME legally sound — including how business owners are freeing up time from operational tasks by letting an AI agent handle their Google Ads while they focus on compliance.
Company House Contact Number and How to Reach Them
The official Companies House contact number is 0303 1234 500. This line is available Monday to Friday, 8:30am to 6pm. Calls are charged at the same rate as a standard local call, so if you have inclusive minutes on your phone plan, it will not cost you anything extra.
For Welsh-language enquiries, the number is 029 2038 0065, staffed during the same hours. If you are calling from outside the United Kingdom, the international number is +44 303 1234 500.
It is worth knowing that the phone line handles a fairly narrow range of queries well. General guidance on filing deadlines, confirmation statement questions, and basic account queries are handled competently. If your issue involves disputed filings, fraud on your register entry, or a complex corporate restructure, you will almost certainly be redirected to a written channel anyway.
For reference, here is a summary of the main contact options:
| Contact Method | Detail | Best For |
|---|---|---|
| Phone (UK) | 0303 1234 500 | Filing queries, deadline guidance |
| Phone (Welsh) | 029 2038 0065 | Welsh-language enquiries |
| Phone (International) | +44 303 1234 500 | Overseas callers |
| Email / Online form | Via GOV.UK contact page | Non-urgent written queries |
| WebFiling support | Via Companies House portal | Online submission issues |
| Post | Companies House, Crown Way, Cardiff, CF14 3UZ | Formal correspondence |
If you need to contact Companies House about a specific service — WebFiling, the register of overseas entities, or a dissolution query — the GOV.UK Companies House contact page routes you to the right team more efficiently than the general number.
What the Company House Contact Number Actually Handles
The company house contact number is useful, but it does not do everything. Having spent nine years running a marketing agency, we dealt with our own share of Companies House admin — late confirmation statements, address updates after moving offices, and the occasional scramble to check a supplier's registration status before signing a contract.
The phone line is genuinely helpful for: checking whether a document has been received and processed, understanding what a rejection notice means, clarifying filing deadlines for accounts, and getting guidance on changing your registered office address or officers.
It is less useful for: resolving disputes about your register entry (these require a formal application), understanding complex accounting exemptions (speak to an accountant), and anything involving the register of persons with significant control where the data is contested.
The staff are generally knowledgeable on procedural matters, but they will not give you legal or accounting advice. If you call expecting that, you will be disappointed.
For issues related to your company number itself — understanding what it means or where to find it — see our guide on Company House Number: What SMEs Actually Need. For direct calling guidance, Call Companies House: What SMEs Actually Need covers the process in more detail.
What SMEs Are Actually Searching For
Search data tells an interesting story here. The company house contact number query attracts consistent monthly impressions from business owners, but almost all of them have a secondary problem underneath the surface question.
They want to file accounts late and understand the penalty situation. They have received a letter and do not understand what it requires. They need to confirm their company is still active before a tender submission deadline. They have spotted an error on their register entry — a director's address, a share class, a filing date — and want to know how to fix it.
In each of these cases, the contact number is the starting point, not the solution. The solution usually involves either filing a specific form via the Companies House WebFiling service or writing formally to the Cardiff office.
Understanding this matters if you are an SME owner trying to manage compliance alongside everything else. The administrative overhead of running a limited company in the UK is not trivial. Filing obligations, confirmation statements, annual accounts, PSC registers — these all run in the background whether or not your business is growing.
Companies House Admin and the Cost of Distraction
Here is something that rarely appears in generic articles about Companies House: the real cost of these admin tasks is not the filing fee or the phone call. It is the context-switching.
For an SME owner, every hour spent navigating government portals, waiting on hold, or chasing paperwork is an hour not spent on the things that actually move revenue — talking to customers, closing deals, and reviewing whether your marketing is working.
In 2026, this problem has become more visible. Business owners are increasingly aware that they are spending disproportionate time on operational administration at exactly the moment when they should be focused on growth decisions.
This is the logic behind how Overtime works. While you are dealing with Companies House queries, confirmation statements, and the other fixed costs of running a limited company, your Google Ads should not require your attention too. An AI agent that logs into your account, adjusts bids, pauses underperforming keywords, and sends you a plain-English summary means one fewer operational task sitting in your head.
For SMEs running paid search alongside their compliance obligations, understanding how much Google Ads actually costs is a useful starting point before delegating management.
How to File and Communicate With Companies House Efficiently
If your reason for searching for the company house contact number is a filing issue, the phone line may not be your fastest route. WebFiling — Companies House's online portal — handles the most common transactions without any need to call at all.
You can file confirmation statements, update your registered office address, submit dormant company accounts, and change director details entirely online. The portal requires your company's authentication code, which is sent by post to your registered office. If you have lost it, you can request a new one via the portal — though this takes up to five working days.
For smaller queries, the online contact form on GOV.UK is often faster than the phone because you get a written record of the response. If you are dealing with a rejection notice or a query about a filed document, having that in writing is useful.
Postal submissions to the Cardiff address remain necessary for certain applications — particularly where original documents are required or where you are making a formal objection. Allow extra time for any postal route.
For SMEs with multiple entities or complex structures, appointing a company secretary or using a formation agent with a managed service removes most of this friction entirely. The cost is usually modest relative to the time saved.
Registering, Dissolving, and Everything Between
The company house contact number covers the full lifecycle of a company's existence on the register. This includes queries about incorporation (though online incorporation via the GOV.UK portal is faster than calling), striking off a company, and restoring a company that has been dissolved.
Dissolution queries are worth calling about, because the timeline and implications — particularly if the company holds assets or has outstanding liabilities — vary. Staff can confirm the current status of a dissolution application and advise on the forms needed to withdraw one if circumstances change.
If you are checking a supplier or potential partner's registration status, the Companies House register search is publicly accessible and does not require any contact at all. You can verify company numbers, check filing history, view accounts, and confirm whether a director has other active appointments, all without speaking to anyone.
For SMEs focused on growth, the time you spend on this kind of due diligence is legitimate. The time you spend managing Google Ads campaigns manually is not — particularly when that can be handled elsewhere. See our overview of small business PPC management for context on what good management actually looks like.
What to Do If You Cannot Get Through
The company house contact number does experience high call volumes, particularly around filing deadlines and in the weeks following HMRC self-assessment periods when business owners are already in an administrative mindset. If you cannot get through, there are a few practical alternatives.
The Companies House webchat service, accessible from the GOV.UK contact page, operates during business hours and is often faster than the phone for simple queries. Response times via the email contact form vary but are typically within two to three working days.
For urgent matters — particularly if a filing penalty is accruing or a dissolution notice has been issued — it is worth calling early in the morning, ideally before 9am, when call volumes are lower.
The GOV.UK Companies House guidance pages are also more detailed than many business owners realise. Most standard queries about confirmation statement deadlines, late filing penalties, and account filing requirements are answered there without any need to contact Companies House at all. See the official Companies House contact and guidance page for the most current information.
Understanding the right contact channel saves time. So does understanding where to delegate the operational tasks that do not require your personal involvement. For paid search specifically, our guide to Google Pay Per Click Management for SMEs covers what active management should involve.
If you are reviewing how your business spends its operational budget — including on advertising — Overtime's pricing gives you a clear picture of what AI-managed Google Ads costs relative to the alternative.
When you have finished resolving your Companies House query, the most useful next step is a review of where else your business is losing time to operational tasks that could run without you. The company house contact number is one call. Your Google Ads account — if it is running without active management — is a cost that compounds daily. Overtime's Google Ads management exists specifically for SMEs who want that handled without adding another agency retainer to the overhead.
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FAQ
What is the Companies House contact number?
The Companies House contact number is 0303 1234 500, available Monday to Friday from 8:30am to 6pm. For Welsh-language enquiries, the number is 029 2038 0065. International callers should dial +44 303 1234 500.
What can I use the company house contact number for?
The phone line handles filing deadline queries, confirmation statement guidance, rejection notice explanations, and basic register update questions. It does not provide legal or accounting advice, and complex disputes or formal applications will need to go through written channels.
How do I contact Companies House if the phone line is busy?
The Companies House webchat service on GOV.UK is often faster during peak periods. The online contact form is available for non-urgent queries and typically receives a response within two to three working days. Calling before 9am also tends to reduce wait times.
Should SMEs appoint a company secretary to handle Companies House admin?
For businesses with straightforward single-entity structures, the WebFiling portal is usually sufficient without additional support. For SMEs with multiple entities, complex share structures, or frequent changes to officers or registered details, a company secretary or managed service often saves more time than it costs.
Do I need to contact Companies House to check another company's registration?
No. The Companies House register is publicly searchable at find-and-update.company-information.service.gov.uk. You can verify a company number, check filing history, view accounts, and see director appointments without contacting anyone.