Chester Zoo in the north of England is recognised as one of the leading zoos in the world. Home to 12,000 animals set in 125 acres of award-winning zoological gardens, it hosts 1.6 million visitors each year. For more than 80 years, Chester Zoo has been dedicated to protecting biodiversity and saving species from extinction. The only reason it exists is the vision and dedication of one man: George Saul Mottershead. How did it all come about?