The British Wheel of Yoga South West www.bwysouthwest.org.uk
Sport England recognised National Governing Body for Yoga

STILLPOINT www.stillpointyoga.co.nz
Ashtanga Yoga Teachers' John Scott & Lucy Scott

Sivananda Yoga Vedanta Centres www.sivananda.org

YouTube videos:

Sri K. Pattabhi Jois on Ashtanga Yoga - A short Q & A on the practice