Starting a personal training business in the UK doesn’t need to be complicated. You don’t need a big brand, a fancy website, or years of experience. You just need to follow the right steps in the right order.
Here’s how to do it properly.
1: Get Qualified
If you’re not yet qualified, this is your first step.
In the UK, there are two main fitness qualifications you’ll need:
- Level 2 Gym Instructor Certificate (also called a Level 2 Fitness Instructor Certificate)
- Level 3 Personal Trainer Certificate
The Level 2 qualification is a prerequisite for Level 3, which means you must either:
- Complete both Level 2 and Level 3, or
- Complete a Level 3 Personal Trainer Diploma, which includes both qualifications in one course
When choosing where to study, it’s important to pick a reputable training provider. This ensures that once you qualify, you’re able to register with CIMSPA as a Personal Trainer.
For more information check out our blog on How to become a Personal Trainer in the UK.
2: Register with CIMSPA
Once you’re qualified, the next step is to register with CIMSPA.
CIMSPA (the Chartered Institute for the Management of Sport and Physical Activity) is the professional body for the UK fitness industry.
Registering with CIMSPA:
- Shows employers and clients that you’re properly qualified
- Helps you meet recognised industry standards
- Supports your ongoing professional development
- Is often required by gyms and insurance providers
While you can work without CIMSPA registration in some cases, being registered adds credibility and makes it much easier to find work and get insured.
3: Register your Business
Before you start taking payments, you’ll need to register your business.
Most new Personal Trainers start as a sole trader because:
- It’s quick and simple
- There’s very little admin
- You can always change to a limited company later
As a sole trader, you’ll register with HMRC so you can legally earn money and pay tax.
You don’t need to overthink this at the start — the goal is just to be set up properly so you can begin working.
4: Set Up Your Tax
Once your business is registered, you’ll need to sort your tax.
This includes:
- Registering for Self Assessment with HMRC
- Keeping basic records of your income and expenses
- Knowing when your tax return and payments are due
You don’t need to be an accountant, but you do need to stay organised. Many Personal Trainers use simple accounting software or a spreadsheet to track income and expenses from day one.
5: Get the Right Insurance
Before you train your first client, you must have insurance in place.
Most Personal Trainers will need:
- Public Liability Insurance (covers injuries or damage to third parties)
- Professional Indemnity Insurance (covers advice and instruction you provide)
Insurance protects both you and your clients, and many gyms won’t let you work without proof of cover. Combined with your qualifications and CIMSPA registration, insurance shows that you’re operating professionally. There are plenty of insurance providers available some of the common ones being Insure 4 Sport, Fitness Industry Services and Protectivity. Costs will vary depending on the services you offer and where you operate. It’s your responsibility to research and choose the policy that best fits your business
6: Set Up a Separate Bank Account
Before you start taking payments from clients, it’s a good idea to open a separate bank account.
If you’re a sole trader, this doesn’t have to be anything complicated. A separate bank account just for your personal training income and expenses makes it much easier to:
- Track what you’re earning
- Manage expenses
- Stay organised for tax time
Keeping your business finances separate from your personal money will save you a lot of time and stress as your business grows.
7: Start Getting Clients
Once you’re qualified, registered, insured and set up with a bank account, it’s time to start getting clients.
At this stage, keep things simple and cost effective. A Personal Training business is one of the few businesses that you can start with a close to £0 initial investment. You don’t need a big following, paid ads or a polished brand. Focus on where you’ll train (gym, online, home visits, outdoors) and make it clear who you help and how.
Good places to start include:
- Letting friends, family, and your local network know you’re taking on clients
- Posting consistently on social media about your services and results
- Speaking to local gyms or studios about available opportunities
Your goal isn’t to scale — it’s to get your first few paying clients, deliver great sessions, and build confidence. From there, referrals and word of mouth will do a lot of the heavy lifting.
For more detail – check out our blog on How to Get Clients as a Personal Trainer.
8: Focus on client retention
Keeping existing clients is easier and more profitable than constantly finding new ones – especially early on. Retention comes from results, relationships and reliability.
Ways to keep clients longer:
- Track and celebrate client progress regularly
- Personalise programs to keep them engaging
- Check in between sessions
- Provide extra value, like recipe guides or mobility drills.
A client who stays with you for a year and refers friends is worth far more than a one-off booking.
Bottom Line
Follow the 8 steps above and you’ll have a personal training business that’s set up properly, not rushed. Get the basics right first, and everything else becomes much easier to build.
