In this guide, you will understand Form IN01 and whether you need it if you’re doing company registration in the UK. This guide will explain in simple language what it is, when it applies, how to fill it, pitfalls, and at the end some FAQs.
What is Form IN01?
- Form IN01 is the official “Application to register a company” with Companies House in the UK.
- It’s the most important document or you can also say an application that you submit (online or by post) to incorporate a UK company, private limited, public limited, limited by guarantee, etc.
- Using Form IN01, you provide the name of the company, type (e.g. limited by shares or guarantee), registered office address, directors, shareholders, share capital, people with significant control, articles of association (or whether you’ll use model ones), plus statements confirming compliance with legal requirements.
In short, Form IN01 is the legal application form that you submit and the company’s house analyses it to understand whether your business should be incorporated or not.
When Do You Need Form IN01 for Company Registration in the UK?
You need Form IN01 anytime you want to register/incorporate a company in UK. For following entities types, it is a must to submit Form IN01:
- Private company limited by shares.
- Private company limited by guarantee.
- Public limited company (PLC).
- Private unlimited companies.
Important Note: If you’re getting your business incorporated in other forms such as (sole trader, partnership with no limited liability, etc.), you don’t use IN01. Then the forms you need to fill can be understood by calling our experts at: +91-8881-069-069 or write to us at info@e-startup.co
What Information You’ll Need to Provide on Form IN01?
Form INo1 must be duly filled with following information for UK Company Registration:
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Item
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Details required
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| Company name | Must comply with naming rules; not too close to existing names; avoid prohibited words. |
| Type of company | E.g. limited by shares, by guarantee, PLC, etc. |
| Registered office address | Official UK address; must be in the UK. |
| Registered email address | For receiving official notices. |
| Whether you’ll use model articles of association or custom ones | If custom, you’ll need the articles. |
| Directors (and optional secretary) details | Name, DOB, home address, service address, etc. |
| Shareholders / members details | Who owns shares, how many, rights attached, etc. |
| Share capital information | Nominal value, number of shares, classes, etc. |
| People with significant control (PSC) | Who controls or has major influence. |
| Statement of compliance / lawful purpose | Confirming legal obligations & that you’re forming the company for a lawful purpose. |
Difference between submitting Form IN01: Online vs Post for Company Registration in UK
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Method
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Cost
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Processing Time
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Key Points
|
|
Online
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£50 | Around 1 working day (sometimes same day) | Fast, cheaper, system helps reduce errors, most popular option. |
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By Post
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£71 | 8–10 working days | Slower, higher risk of rejection, useful if you prefer physical paperwork or need wet signatures. |
Common Mistakes on Form IN01 and How to Avoid Them
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Mistake
|
Why It Happens
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How to Avoid It
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| Using the wrong registered office address | People enter a non-UK address or use one without permission | Make sure it’s a valid UK address where official mail can be received |
| Errors in director/shareholder details | Misspelt names, wrong addresses, or missing service addresses | Double-check spelling, dates, and addresses before submission |
| Incorrect share allocation | Confusion over number, class, or rights of shares | Plan ownership structure in advance and keep records of decisions |
| Articles of association issues | Forgetting to submit custom articles or using unsuitable ones | Use model articles unless you have bespoke needs drafted properly |
| Company name conflicts | Name too similar to existing ones or contains restricted words | Search Companies House register and check naming rules before filing |
| Missing PSC (People with Significant Control) info | Not identifying or declaring controllers of the business | Identify PSCs early and confirm their details before filing |
FAQs
Can I use a non-UK address for Form IN01 as the registered office?
No. The registered office has to be in the UK. If you live abroad, you can still use a service address or a formation agent’s address within the UK.
What if I use model articles now but want custom ones later?
You can switch to custom articles later, but it means filing the changes with Companies House and passing the proper resolutions. It works, but it’s more effort than starting with custom articles from the beginning if you know you’ll need them.
What happens if I make a mistake with sharing classes or rights?
If the shares are set up wrong, you’ll need to correct it with extra filings. That could mean issuing new shares, transferring them, or even adjusting the company’s share capital. It usually involves more paperwork and sometimes professional advice.
Do I need to start trading straight away after filing IN01?
No. There’s no rule that says you must begin trading immediately. But once the company is registered, you are legally responsible for filing accounts, confirmation statements, and registering for tax, even if the company isn’t active.
If I file IN01 by post and it’s rejected, do I get my fee back?
No. The fee pays for the review, not for approval. If your form is rejected, you’ll need to fix the mistakes and submit it again with another fee. Online filing is usually cheaper and less likely to be rejected.
If you need further assistance or have any doubts, our experts are here to help you. Call us: 8881-069-069.
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