Rival online ad sales network Adlink won the account from Unanimis in April, but BBC Worldwide, owner of , decided to return the account to Unanimis this week.
Rebecca Woodward, head of new media and syndication at BBC Magazines, said: "We decided to return the Radio Times account to Unanimis because of its unparalleled knowledge of the industry and the consultancy and sales services that deliver great value time and time again."
Unanimis also handles the BBC's Top Gear website, as well as the online advertising for Five, the London Stock Exchange, eBay, Ticketmaster and ebookers. It also operates a mobile marketing division udirect, and the technology marketing company Awarez.
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