 Quarterly newsletters were published to members and regular meetings held around the United Kingdom.In recognition of his more than seventy years of paranormal investigations - Dame Jean Conan Doyle described him as 'The Sherlock Holmes of Psychical Research'  - Underwood accepted the invitation to be the Patron of The Ghost Research Foundation (founded in Oxford in 1992), which termed him the "King of Ghost Hunters".In 2000 Underwood was contacted by Clark R. Schmidt, Doctor of Esoteric Sciences from Celestial Visions School of Metaphysical Arts in Fort Lauderdale (founded in 1994) Florida, to become a lifelong member of the Universal Parapsychological and Metaphysical Association (founded in 1996), which he accepted.