Chislehurst Millennium Swim Squad is a small, friendly swimming club formed in January 2000, run by volunteers and coached by professionals. It is based in the Bromley, Chislehurst and Orpington areas. Training sessions are undertaken at Bromley High School, located in Bickley near Bromley, and the Walnuts Leisure Centre in Orpington.
CMSS provides swimming training for children who are already able to swim the main strokes. There is a squad system operating within the Club.
During the course of each year the Club participates in friendly galas with other clubs located in the north west Kent area.