In 2003 Mendoza went back to England to focus her attention on acting. She trained as an actor at the prestigious Bristol Old Vic Theatre School training in Classical Theatre. Mendoza appeared on stage in many classical theatre and modern theatre productions: Coup d'État at MTC, Five Kinds of Silence, Vagina Monologues, Macbeth, Romeo and Juliet, The Importance of Being Earnest, and many more. In 2005 she was cast as the lead role in the film The Descent, Juno. In 2006, she appeared in the role of Australian immigrant and head of housekeeping Jackie Clunes in the BBC1 British drama series Hotel Babylon and went on to shoot the 2nd and 3rd series. In 2007, she guest-starred in the Doctor Who audio dramas Absolution and The Girl Who Never Was. In 2007 she filmed The Descent 2 sequel and horror film Surviving Evil, which she wrote the title track for, "Alone Again". She workshopped the lead role of Molly in Matthew Warchus production of Ghost which was based on the original screenplay by Bruce Rubin. Music written by Glen Ballard and Dave Stewart. In 2008 she joined Dave Stewart's Weapons of Mass Entertainment and began being managed by him developing many projects including her own multimedia project. She was the "face" and designer for the Voodoo Dolls surf/ski apparel clothing line in London and Australia in 2003. She is currently based out of London/LA/NYC recording her solo album, producing films and creating her own multimedia projects.