Daniella Laxton
Founder
Founder of Core Tonic, Daniella Laxton is a fully comprehensively trained Pilates instructor, having completed her 600-hour certification at Pi Studio, London, covering all Pilates apparatus.
Her Pilates journey began over a decade ago when her mother-in-law, a physiotherapist, suggested it as a way to ease her back pain. Experiencing newfound strength, improved posture, and greater flexibility, she quickly developed a deep appreciation for the practice, one that eventually inspired her to become an instructor in 2021.
Later that year, after completing the London Marathon, Daniella suffered a herniated disc and turned to Pilates to support her recovery, reinforcing her belief in its power to heal and restore. In 2024, she went on to run the London Marathon again, this time pain free, which she credits to her consistent Pilates practice.
Her goal as an instructor is to help clients move in a way that strengthens, energises, and builds mind-body awareness, always with just the right level of challenge to keep them coming back for more. Every session is designed to be both effective and enjoyable!
Experience and Qualifications
Daniella has taught at several reputable studios and health clubs, including Pi Studios in Battersea and Sequoia Spa at The Grove, as well as delivering corporate classes for organisations across the UK. During the pandemic, she launched her own virtual Pilates studio, Core Tonic, offering live classes which cultivated a loyal community and paved the way for the in-person studio that followed.
Daniella’s Qualifications:
- 600-hour Full Comprehensive Teacher Training at Pi Studios, covering all Pilates apparatus
- Level 3 Award in Teaching Reformer Pilates, HFE
- Level 3 Diploma in Teaching Mat Pilates, HFE
- Level 3 Award in Teaching Pilates for Pre & Postnatal Clients, HFE
- Pilates Mat Work Teacher Training: Intro To Mat, Progression Mat, and Progression Plus Mat Certification, Pi Studios
- Reformer Jumpboard Workshop, Ten Health & Fitness
In 10 sessions you’ll feel the difference, in 20 you’ll see the difference, and in 30 you’ll have a new body
Joseph Pilates
Aimee Day
Assistant Director
Aimee joined Core Tonic shortly after the in-person studio launched and has played a key role alongside Daniella in shaping the studio into what it is today. As Assistant Director, she brings both leadership and depth of experience to the team, helping to uphold the high standards and thoughtful approach that define Core Tonic.
Trained in Mat and Reformer Pilates at J Pilates, Aimee’s teaching is rooted in precision, control, and breath, with a clear understanding of how the body moves and responds. Her classes flow seamlessly, intelligently layered to ensure clients get the most out of every session, leaving them feeling strong, challenged, and deeply connected to their movement.
With experience teaching at leading studios and health clubs including Third Space London, Aimee brings a calm, confident presence to the studio and is known for delivering beautifully structured classes that always bring results.
Qualifications
- Level 3 Award in Teaching Mat Pilates, J Pilates
- Level 3 Award in Teaching Reformer Pilates, J Pilates
- Pre & Postnatal Dynamic Reformer Course, Ten Health & Fitness
- Reformer Jumpboard Workshop, Ten Health & Fitness
Jessica Laxton
Instructor
Jessica brings a calm, intuitive energy to her classes and is passionate about helping clients feel stronger, more connected, and confident in their movement.
Her interest in the body and movement began early with a mum who worked as a physiotherapist, Jessica grew up with an appreciation for how the body functions and how mindful, strength-based movement like Pilates can support both physical and mental wellbeing.
As Daniella’s sister-in-law and long-time Pilates companion (they were Pilates-ing on the beach long before Core Tonic was born!), Jessica is deeply aligned with the studio’s ethos of thoughtful movement and individual care. She teaches a mix of dynamic and feel-good Reformer classes that focus on balance, breath, and body awareness.
Whether you’re a seasoned mover or just getting started, Jessica has a talent for making you feel right at home on the reformer.
Qualifications
- Level 3 Award in Teaching Reformer Pilates, HFE
- Level 3 Diploma in Teaching Mat Pilates, HFE
Deniz Kotan
Instructor
Deniz brings warmth, precision, and mindful challenge to every class. Her journey into Pilates began with a search for movement that felt both inclusive and disciplined, something that continues to shape her approach today. Certified in Mat, Reformer, and Pre/Post Natal Pilates, she blends intentional control with progressive, fluid movement to create sessions that feel supportive, energising, and accessible.
Her teaching centres on building strength, stability, and control through purposeful movement. Whether on the Mat or the Reformer, Deniz’s focus is simple: to help you move better, feel stronger, and feel part of the Core Tonic community.
Qualifications
- YMCA Level 3 Diploma in Teaching Pilates, HFE
- Reformer Pilates Teacher Training, Fearless Fitness Training Academy
- Ante and Postnatal on the Reformer CPD, APPI
Amber Wimbledon
Instructor
Amber brings a unique global perspective to her teaching, having spent over a decade as a professional ice skater performing internationally in shows on land and aboard cruise ships after finishing her competitive career at 18.
Her love of movement and the ocean later led her into teaching Yoga and Pilates on board a luxury superyacht, delivering bespoke wellness experiences in a seven-star environment for high-profile clientele.
Amber’s teaching is rooted in intentional movement, breath-led flow, and precise alignment, with a focus on helping clients feel strong, connected, and confident in their bodies after every session.
Qualifications
- Level 3 Diploma in Yoga Instruction
- Level 3 Diploma in Pilates Instruction
- STOTT PILATES® Comprehensive Reformer Certification
- Barre Fitness Instructor Certification
- Diploma in Nutrition
