Our Team

Experienced coaches who care about your progress and make every session count.

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Our Team

Our coaching team is one of the things we are most proud of. Every coach brings experience, personality, and a genuine passion for helping members improve, whether that’s building confidence, developing strength, or achieving something they once thought was out of reach.

With a strong foundation in CrossFit coaching and backgrounds across areas like mobility, gymnastics, nutrition and strength training, our team is here to guide, support, and challenge you every step of the way.

  • Kate Jarvis - Co-Owner, CFL3
  • Bill Moore - Co-Owner, CFL2
  • James McAllister – CFL1
  • Sarah McAllister – CFL1
  • Dean Heagarty – CFL1
  • Alan Brooks – CFL1
  • Peter Schofield – CFL1
  • Katie Twentyman – CFL1
  • Andy Tunstall, Calisthenics Coach

Kate Jarvis - Co-Owner, CFL3

At 53, I bring over 20 years of experience in the fitness industry, having worked as a personal trainer across sports centres, gyms, and with private clients. Originally a runner, I turned to CrossFit in search of a new challenge and quickly developed a passion for it. That drive to grow and expand my skills led me to become a Level 3 CrossFit Trainer and co-owner of a CrossFit gym.

What I enjoy most about coaching is helping people achieve things they once thought were impossible, whether that’s building strength, confidence, or hitting milestones they never believed they could reach. While managing egos can sometimes be a challenge, seeing members succeed makes it all worthwhile. My favourite workout is Annie, and I love anything involving deadlifts, dumbbell snatches, and pull-ups, though full snatches and overhead squats are definitely not my favourites.

Bill Moore – Co-Owner, CFL2

I found CrossFit relatively late in life. After being active in the Army with swimming, water polo, boxing, and rugby, it hit me hard when I prolapsed two discs in my lower back. A number of years and a few pounds added later, a few friends and I got into OCRs. We developed a love for them and started training. In a competition we entered, there was a movement called a “thruster”. We didn’t have a clue, but my best mate suggested I try this “CrossFit place, they do thrusters”. It took me 15 minutes to get from my car across the car park to walk through the door, but it’s been the best thing I did.

That was over a decade ago. During that time I got my L1, then L2, and various other courses, trying to better myself and bring more to my classes. I find the best thing about coaching is when one of my cues works or resonates with a member and they improve almost immediately. One of the worst things is probably the “unseen” stuff that every gym owner knows about.

At 58, I am not a fan of the short, sharp workouts. I prefer a slower build-up, something that also challenges the mental aspect of training. I hate Fran but love Karen, and obviously the best lift is a good overhead squat.

James McAllister – CFL1

I found CrossFit (and CrossFit Stormbreaker) when my brother was a coach and suggested I give a taster session a go. I haven’t looked back. When I decided I wanted to become a coach, it was mainly due to establishing that the correct number of walkouts in a warm-up is 5 and not 3, something I still try to ensure happens today. Watching people get better and achieve goals they have set themselves makes it worth being a coach.

The worst thing about coaching? Picking up a barbell to demo in December through to February… if you know, you know.

I love Fran as an all-out sprint workout, and anything gymnastic is my favourite movement. You can’t beat any form of pull-up. I am not keen on overhead squats.

I have always been active, from long-distance running to playing rugby. I tried CrossFit 8 years ago and never looked back.

Sarah McAllister – CFL1

After going to classes at the local sports centre for a few years but finding them repetitive, I wanted more of a challenge. I found Stormbreaker and loved it. I really enjoyed CrossFit, especially the weightlifting side, and wanted to learn more about how I could improve my technique, so I booked onto the Level 1 course.

Seeing things “click” for people and watching them improve or hit a PB is one of the best parts of coaching at Stormbreaker. One of the worst is the grief we get for programming people’s least favourite movements.

I love anything with a barbell. DT is a great workout for me. I also love being upside down and wall walks, but my favourite movement has to be the Clean & Jerk. On the other side, my least favourite is knees to elbow. I can’t stand them.

Until I joined the gym after university, I had never really participated in sports. If I could go back, I would tell myself to get into weightlifting earlier.

Dean Heagarty – CFL1

My rugby team had folded, and a friend (James) was enjoying CrossFit, so I gave it a try and never looked back. I enjoy helping people do things they never thought they could, so becoming a coach was the next logical step.

Meeting all the different characters that come here is one of the most enjoyable parts, along with the music while they “enjoy” the workout I’ve programmed. One of the worst things is having to explain the workout again to athletes who didn’t listen to the brief.

I love DT as a workout and a good deadlift, with HSPUs being my least favourite movement.

I used to play rugby and enjoyed the banter, but hated training in the gym outside of that. CrossFit changed that. Being coached, learning new skills, and being part of a community hooked me. Now helping others improve is just as rewarding.

Alan Brooks – CFL1

A friend of mine had been trying to get me to tag along for about 6 months. I eventually agreed and was instantly hooked. I believe I have a calm temperament and approachable nature, and when Kate and Bill asked if I had considered coaching, I jumped at the chance.

The different levels of ability we see in each class, and the attitude from members, are some of the best parts. It’s brilliant seeing people achieve things they never thought they could. I hate it when people don’t listen or talk over you while you are trying to help.

I love Cindy and, as much as it hurts me, Murph. The snatch is probably my favourite movement, whereas burpees are my least favourite.

I completed 25 years in the Army, where I was responsible for coaching and mentoring soldiers. Seeing that translate into helping people in the gym is something I really value.

Peter Schofield – CFL1

I started CrossFit because I was feeling out of shape and wanted to make a change. A friend encouraged me to give it a go. The community and members are incredibly supportive, and I wanted to be part of building that environment.

Seeing people improve week on week is brilliant. Members trust the process, and being part of that is great. I would just like everyone to stop chatting and listen to the brief at the start of class.

I love Fran, 21-15-9 thrusters and pull-ups, and enjoy squat cleans and bar muscle-ups. At 5’6”, I’m not too keen on box jumps or wall balls.

I used to race road cycling and had some great coaches along the way. I try to bring that same encouragement and honesty into my coaching.

Katie Twentyman – CFL1

My friends who did not stop talking about CrossFit eventually got me to try a class, and I never left. I am now that person who doesn’t stop talking about it. Guilty.

I wanted to improve myself and gain a deeper understanding of movement so I could help others. Taking my Level 1 and becoming a coach felt like the natural next step, and it has improved me as both a coach and a member.

The best thing about Stormbreaker is the people. Seeing athletes finally nail a movement they have been working on for months is amazing. The cheers when someone rings the bell are one of the best sounds in the gym. The worst is when someone says “I can’t do that” without even trying.

I love the workout Morrison, and you can’t beat a good snatch. I like how complex it is. Unpopular opinion, but I don’t like deadlifts.

I have always loved sport. I played county netball and for England U16s, as well as county badminton. Later, I discovered CrossFit and completely changed my lifestyle. I have lost over 6 stone, and CrossFit has been one of the most rewarding things I’ve ever done.

Andy Tunstall, Calisthenics Coach

My partner Kate got me interested in CrossFit but I was intrigued by the gymnastics aspect of it. As a result of loving all things bodyweight I trained in, and became qualified to coach, Calisthenics. This allowed me help teach people new skills, something I love seeing the results of!

The community at Stormbreaker is, without doubt, one the best things about the place. However, coaching Calisthenics to CrossFitters can be frustrating. Calisthenics is about “slow and steady” whereas CrossFitters tend to want to go “fast fast fast”!!!!

As you can probably guess, one of my fave workouts is JT but I also love anything that includes box jumps or anything else ‘gymnasticy’. Just keep me away from OHS!

You may also see me around the box teaching Krav Maga self-defence classes. Training in martial arts is what got me hooked on fitness. I trained to become a Krav Maga Instructor and qualified as a PT, mostly specialising in Calisthenics – been doing both now for over 10 years and still love it!