TRAIN WITH

At Mumford Fitness, we believe in helping you become the best version of yourself. Whether you’re aiming to build strength, lose weight, or simply lead a healthier lifestyle, we’ve got the expertise and support to guide you every step of the way.

MY
CLIENT'S
RESULTS

Results Guaranteed

Together, we'll create a customised plan tailored to your unique needs and aspirations. With my guidance, you'll learn effective exercises, proper techniques, and nutritional strategies that will accelerate your progress. Let's embark on this journey together, stay motivated, and achieve the results you’ve always dreamed of.
CHAT WITH ME

WHAT YOU
GET

Personalized workouts designed to help you achieve your specific fitness objectives.
Proven strategies for sustainable fat loss, muscle gain, and overall fitness in less time.
Continuous guidance, motivation, and accountability to keep you on track inside and outside of your sessions.
From beginners to advanced athletes, receive professional training that matches your skill level and goals.

DID YOU KNOW?

One thing people don’t always realize when they hire me as a personal trainer is that a lot of the value I bring goes beyond the workout sessions. While the physical training is important, the real long-term benefits come from my personalized guidance on nutrition, recovery, mindset, and building healthy habits. I help my clients develop the right behaviors and routines, which are often the biggest hurdles to seeing lasting results. It’s this whole-life approach that leads to sustainable changes, not just the time spent in the gym.
SEE SERVICES

CHOOSE YOUR STYLE

Personal Training
At Island Gym
•Personalised training plan to reach your goals
•Learn effective exercises, techniques and nutrition strategies
•Train in a friendly and supportive gym community
LEARN MORE
Online
Coaching
•Personalised training tailored to your goals, on your schedule
•Stay on track with weekly check-ins and WhatsApp support
•Train flexibly without sacrificing quality
LEARN MORE
Mobile 
Personal Training
•Train in comfortable, familiar settings
•Enjoy flexible, convenient workouts that fit your busy schedule
•Stay motivated with personalised outdoor sessions if you wish
LEARN MORE
Sports 
Massage
•Speed up recovery, reduce tension and imporve your performance
•Enhance flexibility, circulation and prevent injuries with tailored treatments
•Can be done at home or in Helen Jane Salon
LEARN MORE

Creditations

KARL MUMFORD

Certified Personal Trainer and Sports Massage Therapist

ABOUT
ME

I’m Karl Mumford, a personal trainer and Level 4 sports massage therapist, dedicated to helping people unlock their full potential. My own journey began with childhood obesity, but through hard work and commitment, I transformed my life—eventually becoming the NPA Southeast Novice Champion in natural bodybuilding. 

Since qualifying as a personal trainer in 2013, I’ve worked in commercial gyms, launched my own mobile training business, and now coach clients at Island Gym on Canvey Island. Whether in the gym, at home, or online, I tailor my approach to fit your lifestyle, helping you achieve sustainable results. 

As a sports massage therapist, I also focus on recovery and injury prevention, ensuring you can train smarter and feel your best. I know first-hand what it takes to make a real change, and I’m here to guide and support you every step of the way.
LEARN MORE

ABOUT
THE RESULTS

TESTIMONIALS
  • Excellent instructor, lessons are planned and structured around your requirements and ability. Offers plenty of encouragement so that you push yourself to your maximum level. Good advice on nutrition too.

    Mark Speller

    Karl is a long term friend who I’ve known since Secondary School. Many will read this thinking well he is just trying to drum up business for his mate. Of course there is some truth in that but as a trainer his skills far outweigh our personal relationship.
    I reached out to him during a very difficult period. My marriage with my wife had just broken down and I needed a new focus. Karl’s structured plan along with his presence brought… See more

    Daniel Kellard

    I would 1000% recommend Karl for personal training. I have trained with him on and off over the years balancing work life, wedding prep and now postpartum and parenthood. Not only is he knowledgable and motivating but mentally, he just gets it! I have arthritis and although he is very understanding and accommodating, he never allows me to use it an excuse not to make progress! Can’t wait to see what 2024 has in store, Thanks Karl!!

    Clare Wilkinson

  • I have been training with Karl since January , I had put on a few pounds and feeling very flat and insecure on how I looked and felt.
    Over the past year I have lost over two stone in weight and my confidence and self worth has grown
    I am now trying to build muscle and get in the best shape of my life .
    Karl has been and inspiration to me , his passion for fitness and also his understanding on how I was feeling ,
    I have an amazing PT and also gained a friend .

    Lorna La-Rocque

    I have been a client of Karl for some years and, at 75, am one of his oldest. We have met in person in my garage, the park and several gyms and via Zoom at home (Covid-19). Karl manages to devise challenging and varied exercises which are appropriate for the environment we are in - and also my age! He is very knowledgeable about wider aspects of fitness including food/diet. He clearly enjoys his job and this helps ensure each training session is enjoyable as well as stretching.

    Nu Null

    100% recommend Mumford Fitness! Since working with Karl, I’ve lost weight, gained muscle, become more comfortable in my own skin and confident. After every session I feel absolutely knackered but energised and always leaving with a smile. Karl makes exercising fun, interesting and comfortable which I would say is the most important factors to feeling fully accomplished after working out!

    Gaby Field

  • Having completed my 1st 12 weeks with Karl and dropped to a weight I could only dream of before starting this journey.
    It's safe to say what he does works and works well. With highly enjoyable sessions and a food plan that is tailored to your taste buds so you won't be forcing down foods you don't like. It keeps you interested and moving closer to your goals.
    Highly recommend his services.

    Kieran Nash

    Karl plans and delivers amazing PT sessions! Highly recommend to anyone looking to lose some weight, tone up or build muscle! 5 star service! A very professional approach

    Ben Tipper

    Karl has opened my eyes to many fantastic different training methods, such an enthusiastic love felt guy filled with crazy energy 24/7, Someone who works hard trains even harder and will go above and beyond to help everyone before himself!
    He’s an unbelievable friend!

    Connor Stringer

Copyright © Carl Mumford 2025
Proudly designed with Benjamin Lake Creative