He has written episodes for television series including the BBC soap opera EastEnders and The Bill, and runs a YouTube channel focusing on linguistics.

This led to his writing the anthology tribute Inspector Morse: Rest In Peace, and to his first television episode commissions.

Lindsey directed Michael Palin in the short How to Use Your Coconuts for the DVD of Monty Python and the Holy Grail.

[3] He has argued that the phonetic transcription systems for Received Pronunciation that are used in many dictionaries are outdated, as the upper-class accent of the 20th century has died out.

[4] For this reason, Lindsey has created CUBE, an online pronouncing dictionary which is supposed to reflect current pronunciations in Southern British English.