Diamond
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Start your martial arts journey today.
Claim your free trial session — plus a free uniform when you sign up. Beginner-friendly classes for kids (ages 3+) and adults across Northwood & Southall. No experience needed.
Watch A Class
Don't just take our word for it. See exactly what a Diamond Kickboxing class looks like — real sessions, real students, real coaching. Pick a class below and watch it in 30 seconds.
A fun, structured session built for ages 3–6 — warm up games, age-specific drills, confidence-building techniques, and coordination skill games that keep little ones engaged while they learn.
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Find Your Class & Location
Whether you're looking for kids martial arts, adult kickboxing or your nearest venue, our classes run across Northwood and Southall. Start your journey here.
“He's personally invested in the success of those he trains — for us he's family.”
Your First Class is Free —
and We'll Gift You the Uniform
Join 140+ students already training with Diamond Kickboxing across Northwood and Southall. Book your free trial today and walk away with a free uniform when you sign up — no catch, just a genuine welcome to the family.
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The Man Behind Diamond
Sam Welch walked onto the mats for the first time at just five years old — and never really left. What began as a quiet kid finding his feet became a 22-year devotion to martial arts: kickboxing, Taekwondo, Brazilian Jiu Jitsu and Mixed Martial Arts.
He's competed across the country and the continent, won National and London Open titles in BJJ, and stepped into the cage at the O2 London. But ask Sam what he's most proud of and he won't talk about the trophies. He'll talk about the kids.
Why He Teaches
“I coach because I remember what the mats gave me. As a quiet five-year-old, martial arts gave me a confidence I didn't know I had, a discipline I didn't know I needed, and a place where I belonged. Every child deserves that. That's why Diamond exists — not to build fighters, but to build good people who happen to be able to look after themselves.”
More Than a Martial Art
Sam believes every child who walks through our doors should leave with far more than a new technique. These are the things he wants every Diamond kid to carry with them — on the mats, in the classroom, and through life.
Backed by Real Experience
The story matters — and so does the proof. These are the credentials behind every class Sam teaches.
22 Years of
Mastery
Footwork Expertise
22 years of footwork refinement distilled into every drill
Defensive Prowess
Defensive frameworks built from thousands of competitive rounds
Clinical Striking
Striking techniques that maximise efficiency with real world experience
Fight IQ
Reading opponents — a skill only forged through real competition
Experience Timeline
Master Welch begins training at the age of 5.
“Every child is recognised and part of the Diamond Kickboxing Family.”
For over a year now, my two children, Jonah and Tamara, have been attending Diamond Kickboxing classes in Southall, and without hesitation, I cannot recommend them highly enough. From the very first session, Sam built a great rapport with all families, making them feel beyond welcome and supported. We can proudly say we are one of those lucky families. My children have grown so much — besides the fact that they have moved from belt to belt in their kickboxing gradings, but in their confidence, their discipline and their self-belief. Sam and his team have helped my children flourish in more ways than one.
More Than a Gym — A Place to Grow
Whether you're a parent looking for the right environment for your child, or an adult ready to invest in yourself, here's what makes Diamond different.
World-Class Coaching
Head Coach Sam Welch — 22 years competing across kickboxing, BJJ and MMA — teaches every class, not just the advanced ones.
A Real Family Atmosphere
Walk in a stranger, leave part of the family. The community here is unlike anywhere else in Northwood and Southall.
Safe by Design
Every coach is DBS-checked, first-aid trained and safeguarding-qualified. Sessions are structured, supervised and built around your safety.
Every Age & Level
From three-year-old Little Leaders to adult beginners in their first ever class — there's a place for absolutely everyone.
Two Local Venues
Train at our flagship Northwood site five days a week, or join our growing Southall community. One academy, two homes.
Real, Earnt Progression
A clear belt and grading system gives every student milestones to aim for — recognition earned through technique, attitude and consistency.
We're Not Really Teaching Kickboxing
We're teaching confidence. We're teaching kindness. We're teaching a child how to carry themselves through life. Kickboxing is simply the tool we use — the thing that keeps it fun, keeps them engaged, and keeps them coming back week after week.
If you've ever wanted your child to grow up a little more sure of themselves, a little more comfortable in their own skin, and a little more able to look after themselves — you're in exactly the right place.
Genuine Confidence
The kind that comes from inside. Children learn to believe in themselves — standing taller, speaking up, and trusting their own ability when it matters most.
Better Social Skills
Training together, encouraging each other, celebrating each other's wins. Kids make friends outside of school and learn how to be part of something bigger than themselves.
Real Self-Defence
Not aggression — awareness. Children learn how to stay safe, carry themselves with calm, and know exactly what to do if they ever need to.
Focus & Discipline
The same focus that helps in the classroom. Listening, following instructions, and seeing things through — habits that quietly show up everywhere else.
Respect & Kindness
Respect for coaches, for training partners, and for themselves. It's woven into everything we do, not just talked about.
Resilience
How to get back up. Children learn that progress isn't always easy — and that the tough moments are where the real growth happens.
The best way to see it is to come and watch it happen. Your child's first class is completely free — no pressure, no commitment, just a chance to see if it's the right fit.
Book Their Free ClassUnlocking Your Full Potential
At Diamond Kickboxing, we do more than teach punches and kicks — we help people unlock their full potential. Through expert coaching in a welcoming and supportive environment, children develop confidence, discipline, respect and resilience, while adults build strength, fitness, self-defence skills and mental wellbeing.
Whether you're taking your very first class or striving to reach new goals, every session is designed to help you become stronger, healthier and more confident — both inside and outside the academy.
Children Develop
Adults Build
“I come away from each session feeling stronger, fitter, and more sure of myself.”
Signing up to the adult classes at Diamond Kickboxing Northwood is genuinely one of the best decisions I've made. Every session is challenging but genuinely good fun, and they're set up to suit absolutely anyone — whether you're stepping onto the mats for the first time or you've trained before.
Kickboxing & Martial Arts in
Northwood & Southall
A 5★ rated club running weekly classes at two convenient venues covering Northwood, Southall and surrounding areas across West London and the Hillingdon borough. Whether you're searching for kickboxing classes, martial arts for kids, self-defence training or adult fitness sessions near you, our expert coaching team is close by.
Northwood
Holy Trinity C of E Primary School, Rickmansworth Rd, Northwood
Our Northwood base serves members from Northwood Hills, Pinner, Eastcote, Ruislip, Ickenham, Hatch End, Rickmansworth, Moor Park and Watford. Kickboxing classes for kids, teens and adults run throughout the week.
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Ready to become the best version of yourself? Step through the door and experience what real coaching feels like — we guarantee it'll be the best decision you make today.
Beginner friendly · All ages welcome · Join 130+ students