Malcolm Taylor

Professor Malcolm Taylor was the UNIT scientific advisor at the time of the incident involving the Swarm.

Biography
Professor Malcolm Taylor was a Welshman and one of UNIT's top scientific advisors. He had read all UNIT files on the Doctor, whom he idolised. He worked out how to close the wormhole created by The Swarm before the Doctor, who called him "brilliant" and his "new best friend." Captain Erisa Magambo ordered him to close the wormhole to protect the Earth, despite the Doctor and the passengers of Bus 200 being still trapped on the other side. Outraged at the idea of abandoning the Doctor, Malcolm refused. Drawing her gun on him, Magambo again ordered him to close the wormhole. In spite of his fear, Malcolm refused again, surprising even Magambo. Once the Doctor and the passengers safely made their way through, the tense exchange ended. The Doctor called Malcolm to close the wormhole, and in Malcolm's excitement he repeatedly hung up on him. Malcolm closed the wormhole just ahead of the main swarm. After Malcolm met the Doctor for the first time in person, he hugged him and repeatedly proclaimed "I love you!" The Doctor, bemused, pointed to Malcolm affectionately as he walked away. (DW: Planet of the Dead)

He was good friends with Martha Jones, who would occasionally fill in for him, even after she had left UNIT. (IDW: Don't Step on the Grass)

Units of measurement
Professor Taylor made his own forms of measurements, including:
 * Malcolms - One Malcolm was a wavelength parcel of ten KHz operating in four dimensions. He came up with the idea to name a form of measurement after himself from James Watt, saying "it didn't do [him] any harm.". It is possible that the unit of measurement, as well as the character's name itself, was a reference to a character Lee Evans sometimes features in his stand up routines
 * Bernards - One Bernard (named for the rocket scientist Bernard Quatermass) was one hundred Malcolms. (DW: Planet Of The Dead)