Kris Longknife and The Doctor

I'm 10 books into the Kris Longknife series few hundred years in the future space opera, no other reference to Doctor Who then... "Kris fell silent, just what was a frigate? Kris had never heard of that class of ships. How big was it?... Kris decided to wait and see if this new Wasp was bigger than a breadbox and smaller than the mythical telephone booth" bwahahahahaah