London's first cable system, established in 1952, broadcast American signals that crossed the border, including WICU from Erie, Pennsylvania.
Shortly afterward, another cable operator, named Community Television was also established serving southwestern London and a "gentleman's agreement" set a boundary, convoluted in the old London South (Wortley Road) area; Community Television was later purchased by Maclean-Hunter, and Maclean Hunter was ultimately purchased by Rogers Cablesystems.
Rogers TV Cable 13, brings around 60 of the 76 home and away games of the London Knights of the Ontario Hockey League.
In the 2009 OHL Playoffs Rogers TV carried all home and away games in the London Knights schedule.
This was the first time games from the Tulio Arena in Erie, PA and The Dow Event Centre in Saginaw, MI were broadcast on Canadian television.
Competitor CKSL started in 1956; a third station, CJOE, was founded by Joe McManus in 1967, changing to CJBK in 1973.
CBC Radio One operates a CBC production centre, CBCL-FM, at the London Public Library's Central Branch that produces a local morning show, London Morning, and a regional afternoon show, Afternoon Drive, that covers Southwestern Ontario from London to Windsor in addition to the network's standard national and province-wide programming.
Founded in 2003, L'Action is a weekly French language newspaper serving London, Sarnia, Woodstock and Owen Sound.
The Ilderton Telephone Company served areas now within London city limits, but ceded those areas to Bell Canada when customers demanded improved phone service; further cession would make the company unviable so it was sold to Bell Canada.