Sir David Attenborough is worthy of two entries in this book - one for his remarkable body of work and another for the wonderfully soothing effect of his voice – but I shall combine both here.He has been broadcasting on television since 1954 and his career since then has spanned 20 separate series, with a 21st currently in production, and countless individual documentaries. His perceptive, empathetic and enthralling commentary to each of these programmes has been one of the major factors in their enduring quality and generations of children and adults have grown up listening to his voice. He has informed, educated and delighted an entire nation.