Katharine's first poetry collection The Floating Man was published by Picador in 2010 and won the Seamus Heaney Centre Poetry Prize. Her second The Remedies was also published by Picador and was shortlisted for the TS Eliot Prize.  A pamphlet The Violin Forest was published by HappenStance in 2019.

The Floating Man was shortlisted for the Jerwood-Aldeburgh First Collection Prize and for the Ted Hughes Award for New Work in Poetry and longlisted for The Guardian First Book Award. A poem from the collection was a Poem on the Underground.

Other poems have appeared in The Guardian, Poetry Review and Poetry London and in several anthologies including the Forward Book of Poetry, She is Fierce and Off the Shelf edited by Carol Ann Duffy. Katharine's poems have also been read on Radio 3 and Radio 4.  

She was born in London and read Modern Languages at St. Hilda's College, Oxford. In 2007 she completed an MA in Creative Writing at Newcastle University.