SWLSIY stands for South West London and Surrey Iyengar Yoga. It is a group Member of Iyengar Yoga (UK) (IY (UK)).

The SWLSIY constitution states that the purpose of the SWLSIY is:

(a) To promote public understanding of the principles of Yoga established by Yogacharya B. K. S. Iyengar (Iyengar yoga).

(b) To co-ordinate, throughout the area, classes for the instruction and training of the public in the principles of Iyengar Yoga, and to arrange and provide for the holding of demonstrations, meetings, lectures and classes.

(c) To register all persons subscribing to the Member Group, to Iyengar Yoga (UK) and to pay Iyengar Yoga (UK) membership fee on behalf of such persons.

(d) To publicise its activities.

(e) To maintain links with other Iyengar Yoga Member Groups and to send a representative to Iyengar Yoga (UK) meetings.

(f) To foster a friendly community spirit and encourage harmony and unity amongst members