He has featured in several projects associated with Ricky Gervais, most notably as Kevin "Kev" Twine in the comedy-drama Derek, and in smaller roles in Extras, After Life and the film Cemetery Junction.

[2] Before undertaking acting roles, Earl worked as a gardener,[3] a greenkeeper at a golf club, a van driver delivering building tools, and a window cleaner.

One of Earl's earliest online videos featured him playing a character called Graham, which he sent to a friend who showed it to Ricky Gervais and Stephen Merchant.

[6] In the pilot Gittins works as a taxi driver: previously the character had been a cafe owner and this discrepancy is highlighted in an episode of the podcast Flatshare Slamdown, in which Earl appears as Brian.

[8] Another of Earl's characters is Steve "Cumbo" Cumberland, who features in a number of online videos, including a Channel 4 Comedy Blaps series, co-written with Brett Goldstein.

From the Summer of 2023 it is now 3 episodes a week released Tuesday to Thursday where they chat to each other as well as special guests including Ben Rufus Green their co-star from The Cockfields In 2021, David Earl and Joe Wilkinson began a podcast called My New Football Club.