How to start a personal trainer business in the UK

What do you need to start a personal training business in the UK?

In practice you need a Level 3 personal training qualification that CIMSPA recognises, public liability and professional indemnity insurance (gyms commonly ask for at least £5m public liability), and a Self Assessment registration with HMRC once your trading income goes over the £1,000 trading allowance. VAT only becomes compulsory when taxable turnover passes £90,000, and if you hold client health data you will usually owe the ICO data protection fee, £52 a year for a micro business.

That is the short version. The rest of this page goes through each piece in the order most UK trainers meet them: qualification, insurance, HMRC, data, pricing in pounds, and the software that holds it together. It is general information, not tax or legal advice, so check anything that depends on your own situation with an accountant.

Qualifications and registers: Level 2, Level 3, CIMSPA and REPs

The UK route is a ladder of qualifications that sit in the CIMSPA directory. Level 2 Gym Instructor is the usual entry point. The Level 3 Diploma in Personal Training is the PT standard for working with clients one to one. An example is the Active IQ Level 3 Diploma in Personal Training, which sits in the CIMSPA directory.

CIMSPA Personal Trainer Practitioner status asks for a recognised PT qualification and 10 CPD points a year.

REPs has an odd history. The original register was merged into the CIMSPA directory in 2020, and the trademark later changed hands. The new REPs came back in June 2026 as a register plus business software for bookings, payments, client records, programmes and check-ins. So it is both a place to be listed and a software option. Being on a public register helps when a client wants to check you before paying.

If you are still choosing a course, the general route is covered in how to become a certified personal trainer.

Insurance: what gyms will actually ask you for

We could not find an official statement on whether insurance is a legal requirement for every PT, but in practice gyms and leisure centres ask for it before you can train on their floor. The figures the market works with, reported by insurers and the REPs resource page, are these:

• Public liability: gyms commonly ask for at least £5m, and some ask for £10m.
• Professional indemnity: separate cover for claims that your advice or programming caused harm or loss.
• A bundled PL plus PI policy for a self-employed trainer typically costs about £80 to £180 a year, according to REPs and Insure4Sport.

What I see with new trainers is that they buy the cheapest policy, then find their gym's freelance agreement wants a higher public liability limit. Ask the gym for its minimum before you buy. If you train clients outdoors in parks, ask the insurer whether outdoor sessions are covered too, and if you plan online coaching, check that remote programming is included.

HMRC: Self Assessment, National Insurance and Making Tax Digital

If you start as a sole trader, the tax side is mostly about knowing which threshold you have crossed and when the next deadline is.

Making Tax Digital is the one that catches trainers out. The threshold falls to £20,000 by April 2028, which is well within reach of a part-time PT. Once you are in, you keep digital records and send quarterly updates, so a shoebox of receipts stops working. Start keeping records digitally now, even if you are under the line.

VAT: why personal training is not exempt

Some trainers assume sport is VAT-exempt. HMRC's VAT Notice 701/45 says that "Sports coaching by professionals is not within the exemption as it is not supplied by an eligible body". The exemption is for non-profit eligible bodies. A self-employed PT or a commercial gym charges standard-rated VAT at 20% once registered.

A quick way to see where you stand: at £40 a session, £90,000 is 2,250 sessions in a rolling year, roughly 45 a week across 50 weeks. On 1:1 work alone that is a lot of hours, but a trainer who adds a small studio, group sessions and online clients can get closer than they expect. When you approach the line, decide with your accountant whether prices go up by the VAT or the VAT comes out of your margin.

UK GDPR: PAR-Q forms, injuries and measurements

Under UK GDPR, health data is special category data. You need a lawful basis under Article 6 and a separate condition under Article 9, such as explicit consent. The ICO has no fitness-specific guidance that we could find, but our reading is that PAR-Q answers, injury notes and body measurements fall squarely under the health data definition.

What that means day to day:

• Ask for explicit consent on your intake form, in words a client will understand, before you collect health answers.
• Only collect what you will use. If you never look at resting heart rate, do not ask for it.
• Keep client records in one place with a login, not in WhatsApp threads and screenshots.
• Pay the ICO data protection fee unless you are exempt. From 17 February 2025 it is £52 for Tier 1 micro organisations, £78 for Tier 2 and £3,763 for Tier 3, with £5 off by Direct Debit (Lewis Silkin, 2025).
• Have a way for clients to complain to you about how you use their data. Law firm summaries of the Data (Use and Access) Act 2025 say a complaints procedure for controllers applies from 19 June 2026 (Mishcon de Reya).

Pricing your sessions and online coaching in pounds

UK price data for PT comes mostly from marketplaces and coach blogs, not independent surveys, so treat these as typical ranges.

The gym membership line matters more than it looks. Your client is already paying the gym every month, so a £45 session can feel like a second membership each week. Packages of 10 sessions, or a hybrid of one in-person session plus an online programme, are how many UK trainers make the maths work for clients. There is more on that model in hybrid personal training, and on setting your rate in how much a personal trainer should charge. For what clients see on the other side, see the sibling post on personal trainer costs in the UK.

Monthly plans and the new subscription rules

If you sell rolling monthly coaching, keep an eye on the DMCC Act 2024 subscription contracts regime. The government said on 10 August 2026 that it will come into force in January 2027. Summaries of the government response describe reminder notices, a renewal cooling-off period and easy online exit. The secondary legislation and CMA guidance were not fully published at the time of writing, so it is not in force today and the detail may still change. Making cancellation simple now costs you little.

Payments: card, cash and Direct Debit

A common set-up is a mix: card payments for packages and monthly plans, bank transfer or cash from long-standing clients. Bacs Direct Debit is common for gym memberships and comes with the Direct Debit Guarantee: an immediate refund if an error is made, advance notice of changes (normally 10 working days) and cancellation through the bank at any time. If you want Direct Debit, you set it up with a payment provider or your bank. The sibling post on Direct Debit for gyms in the UK, Australia and Canada compares the schemes.

The software stack for a UK PT business

A UK PT business usually needs five jobs covered: a booking or scheduling tool, a place for programmes and check-ins, a client record with intake forms, a way to take payment, and bookkeeping that can feed Making Tax Digital. Some trainers glue four apps together. Others pick one coaching platform and keep only the accounting separate.

UK-founded options include PT Distinction (Wiltshire), which publishes its prices in US dollars, and My PT Hub (Burgess Hill, now owned by EverCommerce), which shows prices in euros from €25 a month for 3 clients on its pricing page. The new REPs also offers PT business software alongside its register. For a broader view of what these tools cost, read how much personal trainer software really costs.

Where Trainera fits for a UK trainer

Trainera is one platform for programmes, nutrition plans, check-ins, habits, chat, payments and a branded trainer website, with a free client app for iOS and Android. A few points UK trainers should know before signing up:

• Plans are priced in pounds. Free is £0 for 3 clients, Starter £16.99 for 10, Pro £39.99 for 30, Business £79 for 75, each a month, as set for the UK on trainera.fit/pricing.
• Questionnaires (intake forms) are on every plan, including Free, which is where your PAR-Q and consent wording can live.
• Payment models: request only (price agreed outside the app), monthly subscription by card with Apple Pay and Google Pay, pay per plan, or cash payments recorded against a client you add manually. The cash model suits in-person sessions paid at the gym.
• Trainera does not run Bacs Direct Debit. If you collect by Direct Debit, do it through your own provider and keep the client record in Trainera.

You stay the controller of your clients' data, so the ICO fee, consent wording and complaints process are still yours to sort. The Trainera platform for personal trainers page shows what each plan includes.

A first-month checklist you can work through

1. Confirm your Level 3 qualification is CIMSPA-recognised and decide whether to join CIMSPA or list on REPs.
2. Ask the gyms you want to work in for their insurance minimums, then buy PL plus PI to match.
3. Register for Self Assessment once you expect more than £1,000 of trading income, and start digital records for Making Tax Digital.
4. Write an intake form with explicit consent for health data and pay the ICO fee.
5. Set session, package and online prices in pounds from the ranges above, then pick a platform that handles programmes, check-ins and payments.

For the general business set-up steps that apply anywhere, see the personal trainer business setup checklist.

Ready to run your UK clients from one place? See how Trainera works for personal trainers.