The insurer is aiming to raise money for the charity by challenging teams of five to dress up as pantomime horses and compete in qualifying derbies, a grand final and dressage competitions.
The RSA Pantomime Horse Derby takes place on 30 July. RSA hopes it will help Breast Cancer ±±¾©Èü³µpk10 fund research into the development of breast cancer.
Clare Salmon, RSA group strategy, marketing and customer director, and a trustee of the charity, said: 'RSA is delighted to support Breast Cancer ±±¾©Èü³µpk10 in this way. The event offers participants the chance to pit their equestrian and athletic skills against some of the UK's finest corporate eccentrics.'