
The two-year agreement will see the six-foot, 21-year-old branded with Racing UK's logo throughout the 2009/2010 and 2010/2011 seasons.
The deal will also include guest appearances on the channel alongside the current line-up of racing pundits that include Tom O'Ryan, Graham Cunningham and Steve Mellish.
The deal is a key step for Racing UK, which has rebuilt its status as an independent broadcaster after the demise of pay-TV partner, Setanta, earlier this year. The channel is available on Sky 432 and Virgin 536.
Coleman is hotly tipped for success after rising through the ranks over the past two seasons and a win on Kayf Aramis at this year's Cheltenham Festival.