John Harris is the Principal Zoologist of Wildlife Experiences, an ecological consultancy and wildlife tourism business. He worked as a teacher for nearly 20 years before branching out into a career that encompassed his lifelong passion for nature and education. He works as an ecological consultant on projects across Australia as well as leading tours to see Australia's unique flora and fauna.

Mary Berry is the nation's favourite baker and author of over 70 books, including the bestselling Mary Berry Cooks, Mary Berry's Absolute Favourites, Mary Berry At Home and Mary Berry’s Baking Bible. She was the much-loved judge on the BBC's The Great British Bake Off and has been teaching the nation to cook for over four decades.

Cordon Bleu trained in Paris, Mary began her career as a magazine cookery editor before publishing her first cookery book in 1966. Mary is also an AGA expert and taught AGA masterclasses for many years from her home with Lucy Young.

In 2009 Mary was awarded the highly coveted Guild of Food Writers Lifetime Achievement Award and in 2012 she was made a CBE in the Queen's Birthday Honours list.