“No, mummy!“ Queen Elizabeth II private moment with the Queen Mother

Queen Elizabeth II and the Queen Mother share a private moment at the 1991 Epson Derby horse race. This is part of the BBC documentary Elizabeth R (1992). There doesn’t seem to be a DVD version available for sale. However, Amazon may have used VHS copies here: =sr_1_1?s=video&ie=UTF8&qid=1352575407&sr=1-1