Wildthyme Unlimited was a factory located in England in which Iris Wildthyme manufactured Suitors for her company, Suitors, Inc. The robots were designed to resemble either the Fourth or Third Doctor.
The Fourth Doctor, Romana I and K9 Mark II investigated the factory following reports of missing elderly ladies. Harry Sullivan and Sarah Jane Smith investigated the factory as well and met up with the Doctor. (PROSE: Suitors, Inc.)