Well-known for portraying Annie Cartwright over the BBC series Lifestyle on Mars, Light is also significant for playing the role of Jess Mercer over the ITV series The Fixer as well as for appearing as Pamela Barnes within the 2004 film Vera Drake. After participating in the Liverpool Institute of Performing Arts, the made an appearance in two shows of Auf Wiedersehen, Family pet. She starred as Heavenly Critchfield within the 2010 Royal Country wide Theatre production from the Tennessee Williams play Planting season Storm. She was created and elevated in Rotherham, South Yorkshire, Britain. She distributed the stage with Kristin Scott Thomas within a 2014 Aged Vic Theatre creation from the Greek play Electra.