Claire Guest has been involved in the training of dogs for tasks involving scent for over twenty years.

She is currently Chief Executive and Director of Operations for the charity Medical Detection Dogs, an organisation that trains dogs to identify human disease by odour. They are currently working on a number of pioneering research projects involving canine olfaction, including the training of dogs to detect cancer, blood sugar changes and Addison's disease.

In 2011, she was awarded an Honorary Doctor of Science in recognition of an outstanding contribution to development of new approaches for the detection of life threatening diseases.