How to Setup a UK LLC in 24 Hours Fast and Safe in 2026 | Bastion Formations

If you're still googling UK LLC setup, you're wasting days on the wrong country. And here's the 24-hour fix. Here's the problem. The UK doesn't have LLCs.

They have limited companies. Companies House processes UK limited companies in 3 to 6 hours if filed correctly online. Authentication code arrives in 5 days by post, but digital setup completes in 24 hours. Most non-UK founders search UK LLC because they want limited liability fast.

A UK entrepreneur registers a limited company through Companies House online. Within 24 hours her company is live, but the authentication code needed for filing taxes arrives 5 days later by mail. Here's what matters now. If you file incorrectly or miss one field, Companies House rejects your application and you lose 3 to 7 days resubmitting.

The UK system is fast, but unforgiving. One mistake costs you a week. Most people fail here. They pick a company name that's already taken or too similar to a registered trademark.

Companies House has 5. 2 million active companies in 2026. If your name conflicts, the application bounces instantly. Then you wait another 24 hours for the resubmit.

Check the Companies House name availability tool before you pay the 12-pound filing fee. That one search saves you 48 hours. Go to gov. uk and search Companies House register a company.

You'll pay 12 pounds for same-day electronic filing or 40 pounds for paper, which takes 8 to 10 days. Choose electronic. You need one director over 16, one shareholder, a UK registered office address, and a SIC code describing your business. Vast information handles the US side for founders who want both a limited company and a US LLC.

Wyoming LLC costs $249, Delaware $349. Most UK founders add a US entity within 6 months to access Stripe US and US banking. Enter your company details. This is important.

The registered office address is public. If you work from home and don't want your address on public record, use a registered office service. They cost 50 to 100 pounds per year. Your company name must end with limited or LTD.

Pick your SIC code carefully because HMRC uses it to estimate your tax category. Enter your director details and shareholding. Most solo founders issue 1 to 100 shares at 1 pound each. Click submit.

Companies House emails your certificate of incorporation in 3 to 6 hours if filed before 2:00 p. m. UK time. Here's the problem.

Your company is live, but you can't file taxes or open a business bank account until the authentication code arrives by post. That takes 5 days. If you moved recently or entered the wrong address, the code goes missing and you wait another 10 days for a replacement. Double-check your registered office address.

One typo costs you 15 days. Bastion first then your US LLC while you wait for the authentication code. Once your certificate arrives, register for corporation tax within 3 months. Go to gov.

uk and search register for corporation tax. You'll need your company registration number, your authentication code, and your first accounting period dates. HMRC gives you a corporation tax UTR within 14 days. Then open a business bank account.

Most UK banks want proof of trading, your certificate of incorporation, your UTR, and ID for all directors. Barclays and Starling process applications in 5 to 10 days in 2026. If you're a non-UK resident director, add 7 to 14 days for extra compliance checks. Bastian Informations covers registered agent service in all 50 US states for $99 per year.

If you want a US LLC alongside your UK company. Search Companies House register a company on gov. uk. Select electronic same-day filing for 12 pounds.

Enter your company name, registered office address, director details, and SIC code. Submit before 2:00 p. m. UK time.

Certificate arrives in 3 to 6 hours. UK has limited companies, not LLCs. File electronically for 12 pounds, certificate in 6 hours. Authentication code takes 5 days by post.

Need a US LLC, too? Bastian Information sets up Wyoming and Delaware LLCs in 1 to 3 days. Link below. Visit https://bastianinformations.

com.