Bowerman trained at the Bristol Old Vic Theatre School and was a regular in the first two series of BBC medical drama Casualty playing Sandra Mute, the show's first female paramedic.
Her other television work includes: Dodgem, The Count of Solar, Grange Hill, The Vision Thing, Doctors, McCallum, Bad Girls and Night and Day.
In 2007 she guest-starred as the home secretary's PA in Spooks, and returned to Casualty for a one-episode cameo role as a patient.
In 2018 she directed The Coming of the Martians (also known as The War of The Worlds), starring Colin Morgan, Nigel Lindsay and Ronald Pickup, for Sherwood Sound Studios.
Bowerman has also either directed or played supporting roles in numerous other Big Finish audio series: the latter roles have included Ruby in the Sapphire & Steel stories "Water Like a Stone", "Cruel Immortality" and "Second Sight", Murash in "I, Davros: Guilt" and Ellie in Jago & Litefoot.