She made her 2004 TV debut in an episode of Holby City, followed by an appearance in Blue Murder, in which she played a receptionist. Other early appearances included a leading role in the drama Burn at the National Theatre, playing Martha in Martha Loves Michael at the Edinburgh Fringe and the role of Leah in Beautiful Thing at the Sound Theatre.
Bentley's other TV and film roles since 2004 have included WPC Maria Jackson in Dalziel and Pascoe, Leonilda in Casanova, Rachel in Grownups and Shelley in the Channel 4 film The Mark of Cain. The second series of Primeval, in which Bentley played a leading role, was shown on ITV in March and April 2008.
She starred in new BBC One comedy drama Mutual Friends alongside Marc Warren, Keeley Hawes, Sarah Alexander and Alexander Armstrong. She also played medical student Holly Farr in Silent Witness in 2008.
She appeared as Mina in the Jonathan Creek 2009 Christmas Special. She appeared alongside Joel Fry in both the BBC3 comedy series White Van Man and ITV2 comedy series Plebs. In January 2013 she played Rose in Miranda and also in 2013 she appeared in the ITV1 comedy drama series Great Night Out as Colleen.
|2005||Can You Take It?||Dawn||Short|
|2007||The Mark of Cain||Shelley|
|2007||Under One Roof||Various||TV Movie|
|2009||Mid Life Christmas||Deirdre Gumbarton||TV Movie|
|2004||Holby City||Steph Holland||One episode|
|2004||Blue Murder||Receptionist||"Hit and Run" (series 2: episode 1)|
|2005||Casanova||Leonilda||TV mini-series, One episode|
|2006||Doctors||Zoe Taylor||One episode|
|2005-2006||Dalziel and Pascoe||WPC Maria 'Janet' Jackson||10 episodes|
|2006||Snuff Box||Beautiful woman||One episode|
|2006||Extras||Linda||"David Bowie" (series 2: episode 2)|
|2006||Goldplated||Naomi Greengrass||Eight episodes|
|2007||Rush Hour||Jogger, Ian's PA|
|2008||Primeval||Caroline Steel||TV series (7 episodes)|
|2008||Mutual Friends||Anita||Six episodes|
|2008||Silent Witness||Holly Farr||Two episodes|
|2009||Jonathan Creek||Mina||One episode|
|2009||New Tricks||Alice Hill||One episode|
|2010||Vexed||Lauren Roberts||One episode|
|2010-2011||My Family||Sasha||"He's Just Not That Into Ben" (series 10: episode 5)
"A Night Out" (Series 11: episode 11)
|2011||Casualty||Annie McLean||Four episodes|
|2011-2012||White Van Man||Liz||13 episodes|
|2012||Love Life||Alex||Two episodes|
|2012||Vera||Laura Deverson||One episodes|
|2012||The Poison Tree||Dawn||Two episodes|
|2013||Great Night Out||Colleen||Six episodes|
- IMDB website (2007). "Professional history". Retrieved 24 February 2008.
- College website (2007). "Professional acting training". Archived from the original on 20 September 2008. Retrieved 24 February 2008.
- Macfarlane-Chard website (2007). "Future work". Retrieved 24 February 2008.
- Talented British Actors website (2007). "Acting jobs". Retrieved 24 February 2008.