One Band per Division is more acurate: Royal Regiment of Scotland; Queen's Division; King's Division; Prince of Wales Division and the Light Division Band, (to become the Band of The Rifles). As ever the Guards Division keeps all its 7 Bands. Usual cr*p argument no doubt that they perform ceremonial duties and are a tourist attraction. Based on rational used wrt the other Bands, they could be reduced to 2, one mounted and one foot.
Full details are in April Solider Magazine, page 13.