How to Choose a Personal Trainer
A good personal trainer will change how you train. The wrong one costs you money and, more often, momentum. Here is what to look for, what to ask, and how to tell after one session whether you have found the right person.
Check the qualification, not the job title
"Personal trainer" is not a protected title in the UK, so the qualification matters more than what someone calls themselves. The baseline is a Level 3 Diploma in Personal Training. Level 2 is a gym instructor qualification — perfectly legitimate, but it is not personal training.
Ask which awarding body issued it, and whether they hold current insurance and a first aid certificate. A trainer worth hiring will answer all three without hesitation.
If you have an injury, a health condition, or you are pregnant or postnatal, ask specifically about Level 4 or a relevant specialism. General training qualifications do not cover those.
Match the specialism to what you actually want
Trainers specialise, and the gap between specialisms is wider than it looks. Someone who competes in powerlifting is not automatically the right coach for a first 10k, and a rehabilitation specialist may not be who you want for a hypertrophy block.
Be specific about your goal before you start looking. "Get fitter" is hard to coach against; "squat my bodyweight" or "run 5k without stopping" is not.
Ask these before you book
- What does a typical session look like? You are listening for structure and progression, not variety for its own sake.
- How do you track progress? Any answer is fine as long as there is one.
- What happens between sessions? Most of your training happens without them there.
- Have you worked with people in my situation? Age, injury history, starting point, schedule.
- What are the cancellation terms? Ask now, not after you miss one.
Judge the first session on coaching, not exhaustion
A first session should be mostly assessment — movement, history, goals — and it should leave you clear about the plan rather than merely tired. Being wrecked is easy to arrange and proves nothing.
Watch for three things. Do they watch you move and correct you? Do they explain why a particular exercise is in the plan? Do they listen when you say something hurts? A trainer who runs you through a workout without doing any of those is selling sessions, not coaching.
In person or online?
Both work, and they suit different people. We have written about each in more detail: the benefits of in-person coaches and personal trainers, and navigating the world of online coaches and personal trainers.
Where they train matters more than you think
A trainer based at a gym you dislike, or one that is a 40-minute drive away, is a trainer you will stop seeing. Check the gym as carefully as the trainer — its equipment, its opening hours, and whether you would be happy training there alone on the days you are not being coached.
Some trainers work across several gyms, some work outdoors or in a private studio, and some will come to you. Ask before you assume.
Find a personal trainer on Gym Directory
We have just opened personal trainer listings alongside our gym directory. Each profile is written and maintained by the trainer themselves — their qualifications, their specialisms, where they work and how to reach them — so what you read comes from the person you would be training with rather than from us.
The section is new and trainers are joining now, so it is worth checking back if nobody covers your area yet. In the meantime you can browse gyms near you and ask at the front desk — most gyms will happily point you at the trainers who work there.
If you are new to all of this, our newbie's guide to joining a gym covers the step before this one.
Are you a personal trainer? List your services — it is free, and the profile stays yours to manage.