Harry Price
From Tardis Wiki, the free Doctor Who reference
Harry Price was a psychic investigator.
In the 1920s he catalogued 121 different entities within Ashen Hill Manor. (WC: Alien File: Erasmus Darkening)
He came to the Isle of Man to discover to origins of Gef, a talking mongoose, and let the Eighth Doctor in on their investigations. He called Helen Sinclair an hysterical woman. He thought that Gef was a fake and wanted to tie Voirrey Irving up to prove it. He didn't realised the truth when the Doctor proved it to him. The Doctor landed his TARDIS on his stage at one of his talks to show him that not all things could be explained away so easily. (AUDIO: The Dalby Spook)