Dress rehearsal of the children's matinee Airs and Graces at London's Scala Theatre 4 year old Tracey Griffith from the Anthorne School of Dancing , Potters Bar , who in ther part of Wendy is the youngest dancer in the show , casts an admiring glance at older dancers awaiting their turn to go on stage . More than 300 children from well known schools of dancing performed in aid of charity . 2 December 1966