[1] Her activities outside of the university have included a seat on the editorial board of The Geographical Journal and chairing the government's Expert Group for Women in STEM.

Frostick has published over one hundred papers and books, crossing disciplines including physics, mathematics and hydraulic engineering,[3][4] as well as rift valleys,[5] and sedimentology.

In addition to her academic work, Frostick was a member of the North East Regional Environmental Protection Advisory Committee from 1997 to 2006.

In the book In our time: The companion to the Radio 4 Series, Frostick goes in-depth about stochastic models and how they help predict where earthquakes might happen because of stress building up and increased seismic activity.

She appeared in the documentary Ancient Apocalypse, offering her geological expertise on whether Sodom and Gomorah was actually possible based on rock displacements.

[9] Frostick was appointed Commander of the Order of the British Empire (CBE) in the 2022 New Year Honours for services to flood risk and coastal erosion management.