Learn to Scuba Dive in Londonwith MariuszSSI diving instructor — UK, Lanzarote & Poland
SSI DIVEMASTER INSTRUCTOR XR
Personal diving training — from your first dive to advanced technical courses and freediving.
Training focused on safety
Calm. Clear. Confident.
“Safety underwater is born at the surface — in preparation, knowledge, and respect for your own limits.
Only then does every dive become true freedom.”
COURSES
Diving courses
Choose your level and grow step by step — from your first certification to technical training.
Swipe to explore →
Perfect first step
Beginner
Start from zero. Learn the basics, build confidence, get certified.
Build experience
Speciality
Improve skills with focused courses like buoyancy, navigation or night diving.
Go beyond limits
Technical
Advanced training for deeper dives, procedures and serious planning.
NOT SURE WHERE TO START?
Pick by what you want to do
Four reasons people get in touch. Find the one that sounds like you.
„I have never dived and want to see what it is like"
One guided session in the pool with an instructor next to you the whole time. No certification, no commitment — just find out whether breathing underwater is for you.
„I want to dive without an instructor beside me"
The certification that makes you an independent diver: dive with a buddy, down to 18 metres, anywhere in the world. Recognised to the same international standard as the PADI course.
„I am certified and want to go deeper"
Five specialties across five dives, including Deep Diving and Navigation. The usual next step once Open Water starts to feel comfortable.
„I have plenty of dives in and recreational limits are getting in the way"
Planned decompression dives to 45 metres, in a twinset or Extended Range sidemount. Requires Deep Diving and Enriched Air Nitrox — if you are not there yet, write anyway and we will map out the route.
WHERE WE DIVE
The places I take divers
Training happens in the water, not in a classroom. These are the sites I run courses and trips at.
- Pool sessionsLondon
- Confined water training at a pool in London, or in the heated indoor training pool at Stoney Cove. The venue is arranged for each course, so it fits the group and the dates.
- WraysburyNear London, UK
- The closest open water to London, used alongside Stoney Cove for speciality and technical course dives.
- Stoney Cove QuarryLeicestershire, UK
- One of the UK's best known inland dive sites, and where SSI Divemaster candidates put their training together. Sheltered water, good depth and plenty to explore below the surface.
- Vobster QuayRadstock, Somerset, UK
- Deep, clear inland water — where the SSI Extended Range and technical courses take place.
- LanzaroteCanary Islands, Spain
- Warm water training and dive trips, run together with Bonito Diving Lanzarote.
About the instructor
Experience you can trust
ABOUT
Hi, I’m Mariusz
I help divers build skills in a calm and structured way — with a strong focus on safety, good habits and confidence in the water.
Whether you’re starting from zero or leveling up to technical training, we’ll choose the right path and pace for you.
Where I teach
I cooperate with selected dive centers in the United Kingdom, Lanzarote and Poland — so you can train and dive in different environments with continuity and trusted support.
COMMON QUESTIONS
Questions before you start
The things people actually ask before booking. If yours is not here, just ask.
Do I need any experience to start?
No. The SSI Open Water Diver course has no certification prerequisites — you start from zero, with your first breaths underwater in the pool. Everything you need, you learn on the course.
How old do you have to be? Can children learn to dive? Is there an upper limit?
From 10, and there is no upper limit — people in their sixties do Try Scuba too. Divers under 15 are certified as Junior Open Water Divers and dive with a dive professional or a certified adult. Ten- and eleven-year-olds are limited to 12 metres; the full Open Water limit is 18 metres. For anyone under 18, a parent or guardian signs the training forms.
How much does a course cost?
Try Scuba is £75, the SSI Open Water Diver course £550, Advanced Open Water Diver £395 and a Scuba Skills Update £95. Every course price includes the SSI online learning materials and the certification. Equipment is included on Try Scuba and Open Water Diver. Site entry fees are charged separately.
Where do the courses take place?
Pool sessions run at a pool in London, or in the heated indoor training pool at Stoney Cove. Open water dives take place at the inland sites London divers use — Wraysbury, Stoney Cove and Vobster Quay. Warm water training and dive trips also run in Lanzarote.
When do courses run?
Some courses run on set dates through the year. Outside those, dates are arranged individually. Say roughly when suits you and you will get a straight answer on what is possible.
What language are the courses taught in?
I teach in Polish or English, whichever you prefer. The SSI online learning materials go further — they are available in more than a dozen languages, so you can work through the theory in your own language even if we run the course itself in English.
I am certified with PADI or another agency — can I train here?
Yes. Certifications from all diving federations are accepted, so you carry on from the level you already hold rather than starting again. Say what card you have and roughly how many dives you have logged, and you will get a straight answer on which course you can join next.
Is an SSI certification recognised worldwide? How does it compare with PADI?
Yes. SSI Open Water Diver is certified to the international standard ISO 24801-2, and SSI — like PADI — is a member of the World Recreational Scuba Training Council. The two entry-level certifications sit at the same level and dive centres worldwide accept either.
WHAT DIVERS SAY
Rated 5.0 on Google
Reviews left on the Google Business Profile, quoted as written. Follow the link to read them at the source.
Mariusz is an exceptional diving instructor! I completed diving classes with him in Lanzarote, and his professionalism, patience, and passion for diving made the experience unforgettable. He explained everything clearly, ensured we felt safe, and tailored the course to suit our needs.
Mariusz is the diving instructor you want, knowledgeable, patient and genuinely passionate. From the first briefing to the dive itself, he made everything feel smooth and effortless. Whether you're a first-timer or an experienced diver, Mariusz makes sure you have an amazing experience.
From the very beginning, you can see professionalism and great knowledge. The training is conducted in a very professional and detailed manner. I am very pleased with the training with Mariusz, I highly recommend it.
Quoted as they stood in August 2026. Google is the live source.