Scientific advisor was the title given by UNIT to their personal adviseron science and technology-related matters.
In the 1970s, the British branch of UNIT originally selected Liz Shaw to be their scientific advisor, but this role soon went to the
In the 1990s, Iris Wildthyme was UNIT’s special scientific advisor. (Interference – Book Two, Bullet Time)
By 2010, UNIT’s regular scientific advisor was Malcolm Taylor. (Planet of the Dead)
The IntrusionCountermeasures Group, a predecessor to UNIT, had a”scientific advisor ” role as well. In 1963, Rachel Jensen filled it. (Remembrance of the Daleks)
Joking, the Fourth Doctor offered Duggan a position as his scientific advisor. (City of Death)
While investigating the strange abilities of apparent medium James Lees for Queen Victoria, the Fifth Doctor was officially appointed Queen Victoria’s scientific advisor, being offered to remain in the role even after his departure (Empire of Death).
A clone of the Sixth Doctor served as the Forge’s scientific advisor from 2004 to 2008. (Project: Lazarus)
On Hellcombe Factory, the Eleventh Doctor claimed that Corporal Edward Anderson was his scientific advisor. (The Dalek Project)