Sarah Brennan was born in Hertfordshire and began her musical education on the piano aged 7 and then the flute aged 11. In 2007 she gained a place to study flute at Birmingham Conservatoire and graduated with 1st class honours after studying principally with Judith Hall. In 2011, Sarah gained a place to study for her Masters at Trinity Laban Conservatoire of Music and Dance funded by a full Leverhulme Orchestral Scholarship. She graduated from Trinity in September 2013 with Distinction. She played in all the major ensembles at Trinity and in Birmingham including Trinity Symphony Orchestra, Chamber Orchestra and in Birmingham Thallein Ensemble, Symphony Orchestra and Pops Orchestra. She also played in the CBSO Youth Orchestra and Academy from 2009-11 under conductors such as John Wilson, Alan Burabiyev and Thomas Sondergard, with whom she played principal flute for a live orchestral recording for BBC Radio 3. From 2007-10 Sarah was a member of Hertfordshire Youth Orchestra with whom she recorded and rehearsed with the celebrity contestants for the BBC Series Maestro.
Sarah was a finalist in the Birmingham Conservatoire Woodwind Prize in March 2011 and Trinity Harold Clarke Woodwind Prize final in March 2012 and was shortlisted for the 2014 Park Lane Group series with guitarist Grant Dowse. In 2013, Sarah went on tour to Poland with K12 Orchestra, to USA to play principal flute for the International Opera Theater in Philadelphia and played flute for Between Empires, a new musical. In August 2013 Sarah travelled to Edinburgh to play in the musical's run of 2 weeks at the Edinburgh Fringe Festival. Most recently Sarah has played for the Colchester Symphony Orchestra and Chelmsford Sinfonietta.
Now Sarah mainly focusses on her teaching career and is currently the flute teacher at Felsted School in Essex, Southbank International School in London and Elizabeth Garrett Anderson School in London as well as having a very busy private teaching schedule at home in St Albans. Also, Sarah plays with many ensembles and orchestras in the London and South East England area.