Leigh first began producing YouTube videos in 2014, under the alias of RetroBait. He created the Nostalgia Nerd channel shortly after, and began creating videos as a part-time hobby. His early videos ranged from
unboxing old tech to game reviews, before moving to in-depth system histories which propelled the channel forward. These are created in a documentary style, focused on the histories of various computer systems and consoles from the past. In 2017, Leigh moved full-time to YouTube production. In 2018, Leigh appeared on Mexican television showcasing the retro computing scene in the UK. In the same year, he appeared in several episodes of the
Kickstarter-backed web series, Digitiser the Show, as himself. In 2018, Leigh wrote ''The Nostalgia Nerd's Retro Tech''. This book was published in November 2018 by
ILEX Press. To date, it has sold approximately 50,000 copies, and appeared in various scholar-related texts. Leigh has appeared as a guest author in numerous national press publications, as well as UK radio shows, advocating retro technology. One of which was Chris Goreham's
BBC Radio Norfolk breakfast show, where he discussed the mystery of the
Elm Hill fossilised keyboard in Norwich. On 3 February 2021, Leigh appeared on the UK based
Channel 4 television show, ''Steph's Packed Lunch'', discussing vintage computers and their values. He frequently appears as a guest speaker at retro-themed events, including Play Expo by Replay Events, as well as a
Primark retro themed clothing event alongside
Pac-Man record holder, Jon Stoodley. As of February 2021, Leigh has collaborated with several other significant YouTube producers, including
LGR,
Ashens,
Did You Know Gaming, Octavius King and Slopes Game Room. He also co-hosts The Octanerdle podcast with Octavius King. == Notable documentaries ==