Sonia Davidson is a registered British Horse Society intermediate stable manager and author of the very successful photographic guide All About Worms. She has worked as assistant horse master for several Scottish films and historical documentaries and is marketing and publicity officer for the Equine behaviour forum. Sonia keeps her own horses and lives and works in Edinburgh. Derek Braid started photography in his final year at school and now contributes to a photo library and a variety of magazines. He currently specializes in digital photography and lives and works in Edinburgh.