1. Validate Your Idea Before anything else, make sure there’s a real market for what you’re offering. Talk to potential customers, research competitors, and confirm people will actually pay for it.

2. Write a Business Plan This doesn’t need to be a formal document at first — even a one-page outline covering your product/service, target customer, revenue model, and basic costs is a great start.

3. Sort Out the Financials Estimate your startup costs and how long until you’re profitable. Figure out how you’ll fund it — personal savings, a loan, investors, or starting lean and reinvesting revenue.
4. Choose a Business Structure Decide whether you’ll operate as a sole trader, partnership, limited company (Ltd), or another structure. This affects taxes and liability. It’s worth a quick chat with an accountant.
5. Register Your Business In the UK, you’d register with Companies House if forming a limited company, or register as self-employed with HMRC for sole trading. You may also need to register for VAT depending on your revenue.
6. Set Up the Basics Open a business bank account, get any licenses or insurance you need, and set up simple accounting from day one.

7. Start Marketing Get in front of your first customers — even before you “launch.” A simple website, social media presence, or just talking to people in your network goes a long way.