Vanessa Ackerman is a British actor, writer, and acting tutor whose professional work is primarily rooted in live theatre, television, and radio, rather than in anime voice acting. She is a graduate of the London Academy of Dramatic Art (LAMDA).

Ackerman's sole identified credit in the realm of anime is her voice role in the English-language adaptation of the 1995 Japanese animated historical film The Diary of Anne Frank. In this film, produced by the renowned animation studio Madhouse, Ackerman provided the English voice for the character Margot Frank, the elder sister of Anne Frank. The English version of the film, for which she recorded this role, was released in 1999 and later made available on various platforms.

Beyond this single project, there is no documented evidence of Vanessa Ackerman taking on other roles in anime productions, nor are there records of recurring collaborations with specific anime directors, studios, or fellow voice actors within that industry. Her professional background, as detailed in her agency profile, highlights a robust career in other performance areas. This includes television credits such as Holby City and The Lost Prince, and extensive stage work with prestigious companies like the Royal Shakespeare Company (RSC), the Royal Court Theatre, and the Globe Theatre. She is also noted for her work as a writer, with a play performed at the Cambridge Junction, and for her involvement in community radio as a board member for Cambridge 105 Radio.

Given the absence of additional anime-related work, her notable achievement within this specific field remains her contribution to the English-language cast of The Diary of Anne Frank.