[3] Her doctoral thesis, an examination of how the career of Robert Devereux, 2nd Earl of Essex shaped late Elizabethan political culture, was supervised by Susan Brigden and completed in 2005.
[11] Her second book was a collection of essays, co-edited with Paul Cavill of Pembroke College, Cambridge, entitled Writing the History of Parliament in Tudor and Early Stuart England.
[12] Steven Gunn, reviewing the work for Parliamentary History, stated that the volume makes a "significant contribution" to historical understanding of the role of the past in early modern politics.
[1] Gajda appeared as a guest in a 2023 episode of the BBC Radio 4 programme Great Lives discussing the career of Sir Edward Coke alongside Ian Hislop and Jesse Norman.
[15] In January 2025 Gajda appeared in an episode of the BBC Two series Lucy Worsley Investigates centred on the Gunpowder Plot, discussing the conspirator Robert Catesby's role in Essex's Rebellion.