How to Start a Successful Business in the UK

Shoaib Aslam ACA is the founder of Pearl Chartered Accountants, a London-based firm that works with startups and growing businesses across the UK. He's also an entrepreneur himself, having started businesses ranging from selling honey online to building a successful accountancy practice. We sat down with Shoaib to get his honest take on what it actually takes to start a business in the UK.

Entrepreneurship is in my blood. I've started and run businesses of all shapes and sizes over the years, and through my accountancy work I've watched hundreds of others do the same.

What I've noticed is that the people who succeed aren't necessarily the ones with the best ideas. They're the ones who do the groundwork properly before they commit. Here are the eight things I tell every founder who comes through my door.

Key Takeaways

• Test your idea for viability before you spend time or money on anything else. Viability means more than just "will this sell."
• Do rough financial projections early. A back-of-the-envelope sense check before a polished business plan saves you a lot of wasted effort.
• Protect your idea before you share it. Waiting until after it's out there is too late.
• Your business name is doing marketing work for you every day. Choose it carefully.
• Understand how VAT and costs work for your specific situation before assuming anything will save you money automatically.
• A good accountant should pay for themselves. If yours doesn't, that's worth addressing.
• Design is how people notice you exist in the first place. Don't treat it as an afterthought.
• You have to promote actively and through multiple channels, at least until the business builds its own momentum.

1. Make Sure the Idea Is Actually Viable

"Viable" gets thrown around a lot, but most people only think about half of it. They ask "will this sell?" and move on. That's not enough.

When I'm looking at whether an idea is viable, I think about three things together.

Knowledge. How well do you actually understand the industry you're walking into? Not just the product or service, but everything around it: suppliers, marketing, who your customers are and how to reach them. If you're already an expert in your field, your odds go up immediately. If you're not, you need to be honest about that gap and plan for it.

Connections. It's not just what you know, it's who you know, and how you'll build those relationships if you don't have them yet. If your product is aimed at senior executives but you don't know any, paid ads alone probably won't bridge that gap. Work out your path to the actual buyer before you assume one exists.

Willpower. None of the above matters without the resilience to push through the difficult stretches. But I always say this: willpower alone doesn't pay the bills. You need to be tough, and you need to be realistic. Both.

2. Do the Rough Numbers Before You Write the Business Plan

I've seen founders spend weeks on a beautiful, detailed business plan for an idea that was dead on arrival. A five-minute rough calculation would have told them that.

Yes, you need a proper business plan if you want a bank loan. No lender hands over money without one. But before you get to that stage, work out the broad strokes first. If the basic numbers don't hold up, there's no point polishing the rest.

A business plan isn't the business. It's a document. The business is the living, breathing thing you build after you've checked the foundations are sound.

3. Protect the Idea Before It Gets Out

Have you heard of Shane Chen? Most people haven't, and that's exactly the problem.

Shane invented the hoverboard. By rights, he should have made an enormous amount of money from it. But the idea wasn't properly protected, manufacturers produced knockoffs at scale, and he lost out on what should have been a fortune.

If your business is built on something genuinely original, protect it before you tell anyone else about it. Get NDAs signed early. Look into trademarks and service marks. Hire a lawyer if the idea is worth it. It's not the most exciting part of starting a business, but getting it wrong can cost you everything.

4. Choose Your Business Name Carefully

A lot of founders treat the name as an afterthought. It shouldn't be. Your name is doing marketing work for you every single day, whether you've thought about it in those terms or not.

My advice over the years has been fairly consistent: short beats long, memorable beats clever, and descriptive beats abstract. If someone can hear your name and immediately understand what you do, you've saved yourself a lot of marketing spend.

Check that the domain is available, particularly the .com and .co.uk versions, before you fall in love with anything. And do check the legal rules around company names on GOV.UK, because certain words and phrases are restricted and will cause problems further down the line if you haven't checked. You can also check if your name is available using the Companies MadeSimple website.

5. Get Your Tax and Costs Under Control Early

This is where I see a lot of early-stage founders get caught out.

On VAT: registering voluntarily before you hit the threshold can help your cash flow if you have significant business costs, because it allows you to reclaim VAT on eligible purchases. But I want to be clear, it's not an automatic saving. It's a reclaim mechanism, and whether it makes sense depends entirely on your specific costs, your customers, and whether they're VAT-registered themselves. Get advice before you decide.

If you're dealing in foreign currencies, that adds another layer of complexity. I've seen clients spend hours on manual spreadsheets tracking exchange rates before they discovered tools like Wise or Revolut. These things exist for a reason.

6. Find an Accountant Who Earns Their Fee

I'm obviously biased here, but I also mean it genuinely: a good accountant should save you more time and money than they cost. If yours doesn't, that's worth looking at.

What I'd look for is efficiency, not just price. A well-run accountancy firm keeps its own admin tight, which means lower fees for you without missing anything important. If your current accountant feels expensive for what you're getting, or they're not covering everything you need, it's worth shopping around. There are firms that do this well.

7. Design Your Shop-Front to Actually Convert

Whether you're running a physical premises or an online business, the thing people see first has one job: to make them stop and pay attention.

If you're building an app, it needs to be properly tested before launch, obviously. But it also has to look the part. Good design isn't vanity. It's often the only thing standing between you and someone scrolling straight past.

Most founders are so close to their own product that they forget something basic: most people have no idea they exist yet. Design is often what changes that.

8. Promote Constantly Until You Don't Have To

Almost nothing sells itself. Not at the start, anyway. The rare exceptions tend to prove the rule.

I tell every new client the same thing: you have to actively put your business in front of people, through as many relevant channels as you can manage, until the momentum builds on its own. That might mean social media, email, cold calls, leaflets, trade fairs, paid ads, or all of the above. The right mix depends on your business and your audience.

The one thing that isn't optional is doing it at all. Skipping promotion is one of the most common reasons a genuinely good business never gets off the ground.

FAQs

What's the most important thing to check before starting a business in the UK?

Viability, and not just whether the product will sell. You need to be honest about your knowledge of the industry, your access to the right people, and whether you have the resilience to see it through. All three matter.

Do I need a business plan before I start trading?

Not legally. But you'll need one to access bank funding, and even without that, working through the rough numbers first helps you spot problems before you've committed real money. Start broad, then get into the detail once the basics hold up.

Should I register for VAT before I have to?

It depends. Voluntary registration can help you reclaim VAT on business costs, but it's not a blanket saving and it adds compliance obligations. Whether it makes sense for your business depends on your costs, your customers, and your situation. It's worth getting specific advice rather than assuming it will benefit you.

How do I know if my accountant is actually worth the cost?

A good accountant should be saving you more than you're paying them, through tax efficiency, time saved, and avoiding costly mistakes. If you can't clearly see that value, it's worth having a conversation about it, or looking elsewhere.

This article reflects the personal views and experience of Shoaib Aslam ACA and is provided for general information only. It does not constitute legal, tax, or financial advice. Always seek tailored advice from a qualified professional before making decisions about your business.