Jenny Winterleaf

From Tardis Wiki, the free Doctor Who reference

Jenny was traffic warden who used to travel with Iris Wildthyme. She used to get diarrhea whenever they went through the vortex. (BFIW: Wildthyme at Large, The Devil in Ms. Wildthyme)

Iris and Jenny once helped the Doctor to defeat the Dalek Supreme in the Crystal Mines of Marlion. (PDA: Verdigris)

Some point after leaving Iris, Jenny became the head of the Darlington division of MIAOW. In 2011, she asked Iris for her help in recovering a variety of alien artefacts that had crashed to Earth. (Enter Wildthyme)