A brand new character in series four, Katy Grin is a hyperactive, annoyingly thin, rather nauseating ex Blue Peter presenter (not based on anyone we know then?). Katy is Bubble’s cousin and business partner to Edina in a newly launched television production company called Radical TV.
Sent in by Tim
Kasha
The overly-friendly young actor who played Saffy in the real Saffy's play, Self-Raising Flower. Kasha seems to have a crush on Saffy and tries to get on her good side while both Saffy and Titicaca shy away from her. She is played by Emma Pierson.
Sent in by Tiffany
Kate O'Mara
Kate played Jackie, legendary 60’s party queen and long lost sister of Patsy Stone. See the episode Happy New Year.
A brand new character in series four, Katy Grin is a hyperactive, annoyingly thin, rather nauseating ex 
The overly-friendly young actor who played Saffy in the real Saffy's play,