In the 1970s, Sergeant Tom Osgood served under Brigadier Lethbridge-Stewart at UNIT
In the 2010s, Osgood (a scientist) served under Kate Stewart (the Brigadier’s daughter) at UNIT
You know what would be amazing? If this fantastic woman became the next companion. Just an ordinary plain girl with asthma an 4s scarf. Just imagine her and Capaldi flying around time and space. No romance. No stupid banter. Just good. old fashioned. Fun.
If feel like she’d lose her inhaler a lot and then Capaldi would get into a lot of trouble trying to find it and eventually he’s just keep like ten inhalers in the TARDIS