Following her D.Phil., Hirst held a fellowship at the
Scripps Research Institute in California, before moving to Cambridge. and since 2020 has been director of the
MRC Mitochondrial Biology Unit having previously been its assistant director (2011-2014) and deputy director (2014-2020). Her main research interest is
mitochondrial complex I. and working with Justin Fedor, published research on mitochondrial supercomplexes in
Cell Metabolism. Recent research in her team includes a study, published in May 2020 by the
American Chemical Society Synthetic Biology on 'Adenosine triphosphate (ATP), the cellular energy currency, is essential for life. The ability to provide a constant supply of ATP is therefore crucial for the construction of artificial cells in synthetic biology' which has developed a
minimal system for cellular respiration and energy regeneration. ==Awards and honours==