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Jack Cronk
Telephone: 07821450000

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Cronk Fitness

About Me

I'm an experienced trainer dedicated on getting results! I offer training in your home or at our bespoke fitness studio. 

What Can I Do For You?

I pride myself on my commitment to help clients reach their goals by providing the support, guidance and motivation needed to ensure success. My goal is to make clients look and feel better in the quickest time possible.

I have worked as a Personal Trainer for 14 years working in many gyms including Virgin Active and David Lloyd. Aswell as running Cronk Fitness I also coach and mentor other new trainers how to improve and be succesfull as a Personal Trainer.

I specialise in weight loss, fat loss, muscle toning, core strength and increasing health and wellbeing. 

My studio is based in Biggin Hill and is fully equipped with the latest fitness equipment such as Kettlebells and Battle Ropes. Training is also offered in your own home or in a park or other outside area. 

I believe that Personal Training should be accessible to everyone know matter your size, shape, fitness level or budget.

What Are My Charges?

Prices start from £40.00 per session


My Latest Promotions

  • First session completely FREE!
  • Purchase block of 10 sessions & receive free Kettlebell!

What Are My Qualifications?

  • Active IQ - Level 2 Exercise To Music
  • Premier - Fitness Trainer Award
  • RPM Instructor

What Training Do I Specialise In?

  • Body Sculpting
  • Kettlebell Training
  • Weight Loss
  • Nutrition & Weight Management
  • Toning
  • Fitness Classes
  • Group Fitness
  • Pre & Post-Natal


I have lost over a stone in 10 weeks. I was desperate to lose weight before my holiday with my family and am so pleased that I found Cronk Fitness. I have one personal training session a week and Jack gives me workouts to do outside of our session and helps me with the food I should be eating. I now really enjoy training which I have never done before and look forward to losing even more weight going forward! Thanks Jack

‚ÄčTestimonial posted by Jennifer Sexton at


I was looking for a trainer in my local area and came across Cronk Fitness. I contacted them through email and was very impressed with how quickly they responded. After meeting Jack he made me feel instantly at ease and as I was a little nervous and explained things for me in simple terms. I have been training now for three months and have seen such a huge change in my body. I feel fitter and my waistline and clothes are a lot looser. I would definitely recommend if you are looking for a personal trainer.

Testimonial posted by Martin Haysbury at


I had 10 sessions with Jack after I had my second child as I was finding it difficult to lose the weight that I had put on. He advised me what food to be eating and gave me a plan of exercises to be doing at home. I was really surprised how quickly I started to lose weight and am now back to my pre baby weight.

Testimonial posted by Margaret Kelson at


Where I Train

In a Gym :1 to 1 Studio :Your Home :


  • Kettlebells
  • Boxing pads
  • Battle ropes
  • Dumbbells
  • TRX
  • Squat rack
  • Bench press
  • Rower
  • Barbells
  • Bosu
  • Slam ball
  • Medicine ball
  • Skipping rope


Geographical Areas Covered

  • Biggin Hill, Westerham
  • Chaldon, Caterham
  • Beckenham
  • Chelsham, Warlingham
  • West Wickham


Get in Touch


07... Reveal07821450000


Useful Information

Member Since: Sep 2017

  • Insurance: Insure4sport ()
  • First Aid: Premier

Gender: Male
Age: 35