Anything is Possible - Let's Get Active

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Click Here to contribute to our 15th Party!
£1 Tokens are on sale now!
Let’s celebrate our birthday by coming together to raise funds and reach our target of £700,
thanks to the valuable feedback from our members! Join our classes such as
Toning & Conditioning, Pilates, Zumba, and Bootcamp
support our community and enable everyone to enjoy affordable keep-fit sessions.
Your participation will make a significant difference in achieving our goal!

fit by sonic services

  • Zumba - All Levels

    Zumba is fun and simple to follow helping to keep your fitness activity fun!
    Join us - this isn't your ordinary Zumba class

  • Boot Camp - All Levels

    You can expect to learn and gain Self Discipline, Mental Agility, Increased Heart Rate and Fitter Cardio Levels. This is an outdoor class

  • Personal Training

    No gyms - a friendly approach with extensive teams of highly personalised One-to-One and PT and Group Training Need advice, support, or motivation? Book a PT session today

  • Other Services

    Besides all our great group exercise classes, we also offer special Adults and Children Zumba® Parties, Footwear and Healthy Living support

  • Pilates - All Levels

    Pilates has positive effects on our bodies and minds alike This is why we include the WillPower Program in these classes

  • Toning & Conditioning

    Our Body Toning Conditioning Class targets your whole body, using different muscles to build strength via the use of light weights

  • Book Your Classes

    Click below to see our Timetable and book any class that you are interested in

  • 15 Years of Possibilities

    Our extensive knowledge has been honed over 15 years of proffessional service.

Payg from £3.50*

Value For Money 15 Years With No Price Increase.

All classes come with loyalty cards and incentives

Invest in your health with Fit by Sonic, where we prioritise providing the best value for our customers. We are confident in offering the most affordable Pay As You Go classes in South London. If you happen to come across a better deal for any of our listed classes elsewhere, let us know, and we will gladly match it. Your satisfaction and well-being are our top priorities.



  • One single Pass
  • Zumba, Bootcamp
  • Toning & Conditioning
from as little as £3.50
Most Popular

Junkie Pass

  • 10 sessions
  • When purchasing a Junkie Pass


  • One single pass
  • Pay As You Go
  • Pilates Only

The Mobile Teamup Apps for Apple and Android are Free.

They can be acquired by clicking on the respective icon.



Numbers Speak

If you are thinking about joining, all I can say is – STOP THINKING – and come and join a class! You will not regret it !

You already know that exercise offers a huge list of health benefits, from improved mood to stronger bones and a lower risk of cardiovascular disease. But while exercise, in general, is hugely beneficial, there’s one type of exercise that can offer additional benefits—and that’s working out with a group of other people.

Let’s take a look at some of the benefits of joining a fitness group, as well as tips on how to find the right fitness group for you.

Why join a fitness group?
On top of all the benefits you’ll enjoy from working up a good sweat, joining a fitness group or group fitness class offers a few additional benefits, both for your health and your social life.

Years of Experience
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Fit by Sonic has been in business since 2008. Our mission is to give everyone a chance to live a fit and healthy happy life

Active Happy Clients
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We are our family – members know the importance of supporting individuals in accomplishing their goals and objectives.

Training Hours

Pay As You Go or Monthly Classes
Affordable rates with incentives, loyalty cards and so much more!

What our Clients Say about us

Google Rating

Fit by Sonic
Based on 14 reviews
powered by Google
Diane FrankDiane Frank
20:38 03 Jun 24
Have been going Zumba for a few weeks with the family. Welcoming atmosphere. Full of laughter, happy faces and a friendly, safe environment. The music funky and hip. Routines varied weekly. Family feel to the class. Everybody is amazing.Five * Zumba.
Marina farryMarina farry
13:42 25 May 24
And great members ...we are community
Ana SantosAna Santos
21:03 02 May 24
Sharon PowellSharon Powell
21:42 25 Oct 23
The zumba classes are so much fun, great music, routines and amazing people. There's so much love and energy from everyone who attends. Liene is a fantastic inspirational instructor who's always smiling and encouraging. At a fiver for classes I'd challenge anyone to find such good value for money for fitness classes in London
dionne williamsdionne williams
09:18 23 Oct 23
Fantastic classes!! Super high and positive energy instructors with a lot of passion and care for our community. Reasonably Affordable the cheapest classes around you get more than your moneys worth with the added bonus of good health tips ( especially going through the menopause and my body changes) they have helped me greatly thank you ladies.
Melanie AdamouMelanie Adamou
22:05 16 Oct 23
Hi ,really love my classes with fit by sonic I am come back I started attending classes back in 2019, it’s lovely community they are my Zumba family fantastic teachers which really help and support you improve fitness it’s only £5.00. It’s amazing atmosphere And just a great place to be with lots of support, giggles and fun. Hope to see you come and join us. 😃😃🥰🥰
11:46 15 Oct 23
This is a brilliant Zumba class! Everyone is so welcoming and friendly no matter what your level of experience or fitness is, the focus is definitely on the fun. You work your arse off but it’s so enjoyable that the hour is over before you know it! Highly recommend


You Can Find All Answers Here FAQ

Choose something comfortable like a tracksuit or jogging bottoms with a T-shirt or sweatshirt for our classes. As for footwear, a pair of flat trainers or barefoot shoes Vibram is best.
For Bootcamp - as its an outside class
In the cold weather try to wear a couple of thin layers rather than one thick layer as it's easier to remove a layer if you get too hot.
You might want to bring some warm gloves and a hat, if it's hot and sunny then you might want to apply some water resistant sunscreen.
A waterproof or rain resistant jacket is handy for wet sessions.
Change of clothes to go home in as you can get very muddy depending on the weather.
Please avoid bringing valuables with you, as we cannot be held responsible for any losses.

Yes, it is best to book via our CMS we have partnered with goteamup to book your classes where you can manage your membership.
We recommend you book Toning & Conditioning and Pilates classes in advance as there are limited spaces.

Remember there are No comments with us we are pay-as-you-go .  Download the apps after accepting the email request. If you wish for Fit by Sonic team are happy to  manage your account. You can text, email and even call our team to help you or just turn up early and you should get a place.
Our classes do get very busy.
For health and safety reasons there is a maximum number of members who can attend each class.

Currently, our both  Zumba dance classes have plenty of spaces.

No, your instructor will keep the moves as simple as possible.  All our classes are for everyone for  all different levels. 
All other classes we shall ensure all is good before you start.

Yes, at Streatham Vale have free off-the-street parking on a yellow single line as it's after hours. Streatham Common you can park at Sainsbury for up to two hours. Please visit our time & location page for further details

All our classes are from £5.00 for a one-hour pay-as-you-go which are Zumba®, Toning & Conditioning, and Bootcamp. Our Pilates are £8.00, we believe we are the cheapest classes in South London and we want to remain the cheapest.  If you find it cheaper we will give you a FREE class!

 All classes include incentives - and we offer more savings i.e pilates from £3.5o with the Junkie card- Great Value  

Contact Marina 0776525 6405

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