[3] Whilst at Cambridge, he co-wrote and performed the comedic sketch show Good Clean Men with Alex Owen, Ben Ashenden and others.

[4][5] Batey's film debut was in the 2013 British thriller, Murder on the Home Front, directed by Geoffrey Sax.

[10] He appeared in the series Knightfall in 2017–2018, a 14th century period piece centered on the Knights Templar, where he played the role of Pierre, a spy after information on the Holy Grail.

[11] Batey is a vocalist and musician for the indie folk band The Amazing Devil, as well as the primary writer and composer.

[16][17] Since 2019, Batey has played the character of the bard, Jaskier, in Netflix's adaptation of The Witcher, based on the Polish novel series of the same name.