Katherine is represented for all acting work by Samira Higham at Independent Talent and for all writing work, by Laura Rourke at Independent Talent.
You can contact Samira here, and contact Laura here. And here's Independent Talent's website.
For voiceover work Katherine is represented by Susan at AdVoice.
Here's Katherine's page at Advoice's Website.
You can also find her on Spotlight, here, and follow her on twitter at @KatherineJake.
Or write directly to her, at email@example.com