He is known for his roles in the Channel 4 comedy-drama Babylon (2014), as well as the historical dramas Medici: Masters of Florence (2016), Jamestown (2017–2019), and Miss Scarlet and The Duke (2020–2024).

[2] Martin portrayed Tony in the comedy-drama television series Babylon in 2014,[3] and Lorenzo de Medici in the historical drama Medici: Masters of Florence in 2016.

[4] From 2017 to 2019, he played Silas Sharrow in the drama television series Jamestown.

[5] Martin next starred as Detective Inspector William Wellington in the period crime drama Miss Scarlet and The Duke for four seasons from 2020 to 2024.

[6] Martin met his wife, actress Lisa McGrillis, at a Christmas party in the National Theatre bar.