Companies House does not have a physical counter you can walk into. It operates as a registry, not a customer-facing office, which means the concept of "opening times" is less straightforward than most small business owners expect when they first go looking.
This article explains exactly when and how you can access Companies House services, what that means for day-to-day business admin, and why SMEs who get the admin side right tend to free up more time for the activities — like Google Ads — that actually drive growth.
Companies House Opening Times: The Definitive Answer
Companies House opening times for its WebFiling and Companies House Service (CHS) are, in practice, 24 hours a day, seven days a week for online services. The online portal is available around the clock, which is where the vast majority of filings — confirmation statements, accounts, director changes — are submitted.
For telephone support, Companies House is available Monday to Friday, 8:30am to 6:00pm. If you are trying to reach them on a bank holiday, expect to wait until the next working day. Their Cardiff, Edinburgh, and Belfast offices do not operate public-facing counters for general enquiries in the traditional sense.
If you need to call Companies House for a specific matter, the contact number is 0303 1234 500, and the lines are busiest early in the week. From nine years running a marketing agency, we dealt with company filings regularly enough to know that Wednesday afternoon tends to be the quietest time to get through.
| Access Method | Availability | Notes |
|---|---|---|
| Online filing (WebFiling / CHS) | 24/7 | Occasional planned maintenance windows |
| Telephone support | Mon–Fri, 8:30am–6:00pm | Closed bank holidays |
| Same-day incorporation | Available online until 3:00pm on working days | Subject to processing capacity |
| Postal filing | Working days only | Allow 5+ working days for processing |
| Cardiff office (in person) | Mon–Fri, 9:00am–5:00pm | Primarily for document drop-off |
What the Online Service Actually Covers
The online service covers the bulk of what SMEs need from Companies House. You can file a confirmation statement, submit annual accounts, register a new company, update your registered office address, appoint or resign directors, and search the public register — all without speaking to anyone.
The public register search is genuinely unrestricted. Anyone can look up a company house number or check filed accounts at any time of day or night, which is worth remembering if you are doing competitor research or checking a supplier before signing a contract.
Where the online system does have limits is around same-day processing. If you need same-day incorporation, for example, the request must be submitted before 3:00pm on a working day. Miss that window and you are looking at the following business day.
One thing that catches people out is planned maintenance. Companies House does take the WebFiling portal offline periodically, usually overnight or over weekends. They publish maintenance schedules on GOV.UK, so it is worth checking before any time-sensitive filing.
Why SMEs Search for Companies House Opening Times
Most searches for companies house opening times come from one of three situations. Someone is starting a new business and needs to incorporate quickly. Someone has a filing deadline approaching and is not sure whether they can do it today. Or someone has received a late filing notice and is in a mild panic.
All three situations are fundamentally administrative problems, not strategic ones. The answer is almost always the same: go online, file now, and do not wait for a phone line to open.
For those genuinely stuck on a complex query — a dispute over filed documents, a question about dissolved company assets, or an issue with the register — the phone line or a specialist company secretary is the right route. But for the 90% of routine tasks SMEs deal with, the online portal solves it outside of any opening hours concern.
This is worth understanding clearly because it changes how you plan your business admin. If you know that WebFiling is available around the clock, you can batch your admin tasks for evenings or early mornings and keep your working hours focused on revenue-generating activities.
Deadlines That Actually Matter More Than Opening Times
Rather than worrying about companies house opening times on a given day, the deadlines are what SMEs should be tracking. Missing these carries financial penalties.
Confirmation statements must be filed within 14 days of your confirmation date. Annual accounts are due 9 months after your financial year end for private companies. Failure to file accounts on time results in a penalty starting at £150 for private companies and escalating quickly the longer the delay runs.
Director changes must be notified within 14 days. Registered office changes take effect immediately when filed online, but again, they need to be submitted. None of these tasks require you to think about companies house opening times if you use the online portal — the system takes care of the processing.
For SMEs managing Google Ads alongside the usual demands of running a business, this kind of administrative clarity matters. The less time you spend navigating government services, the more attention goes to the things that generate revenue. If you want to understand how much Google Ads actually costs relative to the return it produces, this breakdown of ad cost on Google is worth reading before you commit budget.
The Broader Picture: Admin and Marketing Time for SMEs
There is a pattern we observed consistently over nine years of running a marketing agency: the SMEs who struggled most with Google Ads were almost always the same ones who were stretched thin on admin. Not because the two are directly connected, but because both suffer when attention is rationed.
Google Ads in particular punishes inattention. Bids drift out of alignment with market conditions. Underperforming keywords continue to consume budget. Ad schedules stop reflecting when customers are actually searching. These are not catastrophic failures on their own, but they compound quietly over weeks and months.
This is where Overtime becomes relevant. It is an AI agent that logs into your Google Ads account, adjusts bids, pauses underperforming ads, reallocates budget toward what is working, and sends you a plain-English summary of what it has done and why. It handles the ongoing management that most SME owners know they should be doing but rarely find time for.
The connection to admin time is real. Every hour spent chasing Companies House queries, payroll, supplier invoices, or filing deadlines is an hour not spent reviewing campaign performance. Automating the Google Ads layer means that gap stops mattering quite as much.
What Changes in 2026 for Companies House
Companies House has been implementing reforms under the Economic Crime and Corporate Transparency Act, and 2026 sees further phases of that work come into effect. Identity verification requirements are being extended to all directors and people with significant control (PSCs). This will require individuals to verify their identity directly with Companies House before filing or acting in a company capacity.
The practical implication is that the process of incorporating a company or making changes to the register will involve an additional step. Online services will handle this, but it is worth knowing that the process will take slightly longer than it does today, particularly for companies with multiple directors who each need to complete verification independently.
These changes do not alter companies house opening times for the online service, but they do add administrative weight to the process. For SMEs already running lean, that is worth building into planning.
If you are focused on making your marketing work harder rather than just doing more of it, understanding how to advertise your business with Google Ads is a practical starting point alongside getting your company admin in order.
Managing Google Ads While Running a Business
Once the administrative side of a business is under control — filings on time, registers accurate, deadlines tracked — the question becomes what to do with the recovered attention. For most SMEs running Google Ads, the honest answer is that their campaigns need more active management than they are currently getting.
The gap between what Google Ads is supposed to do and what it actually does when left unattended is significant. Smart bidding strategies require sufficient conversion data to function properly. Keyword lists need regular negative keyword additions. Ad copy needs rotation and testing. Budget needs to follow performance, not just run evenly across the month.
For SMEs who want that level of management without hiring a specialist or paying PPC management fees that eat into returns, the Overtime AI agent handles it at a fraction of the cost of a traditional agency. It does not replace strategic thinking, but it does replace the repetitive, time-consuming optimisation work that most SME owners are not doing consistently anyway.
If you want to see specifically how it handles Google Ads management for businesses like yours, the Google Ads overview covers the detail.
---
Frequently Asked Questions
What are Companies House opening times for telephone support?
The Companies House contact centre is open Monday to Friday, 8:30am to 6:00pm. They are closed on bank holidays and weekends. For most routine tasks, the online portal at Companies House Service (CHS) is available 24 hours a day, seven days a week.
How do I file with Companies House outside of business hours?
You can use the online WebFiling service or the Companies House Service portal at any time of day or night. Both allow you to submit confirmation statements, file accounts, and make changes to the register without needing to contact anyone directly.
What happens if I miss a Companies House filing deadline?
Late filing of annual accounts results in automatic penalties starting at £150 for private companies and rising based on how late the filing is. Missing a confirmation statement can ultimately lead to compulsory strike-off if ignored over an extended period.
Should I call Companies House or use the online service?
For the majority of tasks — filing accounts, updating directors, changing a registered office — the online service is faster and available around the clock. Call the contact centre only for complex queries, disputed entries on the register, or situations where you need case-specific guidance.
Can Companies House same-day incorporation be done at any time?
Same-day incorporation is only guaranteed if the application is submitted before 3:00pm on a working day. Applications submitted after that window or on non-working days will be processed the following business day. This is one of the few time-sensitive constraints in an otherwise 24/7 online system.
---
If you have a Companies House filing coming up and Google Ads running in the background, today is a reasonable day to check both. Look up the relevant companies house opening times for your query, file online if you can, and if your Google Ads account has not been actively managed in the past few weeks, take a look at what Overtime can do to keep it optimised without adding another task to your list.