Forma is far from an ordinary gym, we are a centre of excellence.


We teach a truly World-Class and groundbreaking health & fitness service, a progressive system of gymnastic strength training for individuals of all levels ranging from beginners to professional athletes. We’re also an educational centre for Health and Fitness professionals.

Our community is made up of members from across the UK and visitors who travel from overseas. We have members from local areas including Gloucester, Cheltenham and Stroud, and also a growing number of members who travel from Bristol, Bath, Birmingham, Derby & London.

Forma was officially launched in May of 2015 by founders Wesley Tan & Claire Berthier when they decided to bring together their pre-existing Osteopathy practice and fitness classes, which had been running since 2008 and 2012 respectively. Our goal from the beginning has been to share our knowledge and passion for health and movement and to help guide others to improved health & freedom from pain.

At the heart of Forma is a passion for quality; we have made a sustained effort to actively seek out the best sources of learning, to practice the teachings ourselves, absorb the lessons and then pass on our experience to the best of our ability. We are fortunate to have studied under some of the most creative and influential individuals in the fields of both gymnastics and dance and to have studied at some of the best institutions in Europe.

In January of 2017 we opened the doors to our brand new, bespoke, fitness gym and educational centre in Gloucester. We now provide over 25 weekly fitness classes based on gymnastics and dance training across two sites in Gloucester and Stroud, and have a fantastic team of 10 Coaches who continue to progress in their individual training and guidance of others.


Meet our team of great Coaches, read their bios and check out their super abilities.


Besides our group classes we also offer personalised 1-2-1 coaching sessions. Achieve your goals