Tomlinson started her career in public relations, including a period as the receptionist for Max Clifford & Associates. In the early 1990s, Tomlinson worked at the Football Association as a media officer. Later in the decade, she was appointed as the head of the communications department at Arsenal Football Club, where she helped the then new manager Arsène Wenger deal with the media.
Tomlinson joined BSkyB's UEFA Champions League coverage alongside Richard Keys. She then became touchline reporter on Sky Sports' Ford Super Sunday, and co-presented Goals On Sunday, Sky Sports' Sunday morning football highlights programme. Tomlinson was placed on leave from Goals on Sunday for two months, from October 2007. This followed an infamous interview with then Derby County goalkeeper Stephen Bywater, where he spelled out the word c**t during an anecdote, and was not reprimanded for it by Tomlinson or co-presenter Chris Kamara.
Tomlinson is a presenters on Sky Sports News, usually on their late show Through the Night. In April 2007, she became the first woman to present the Professional Footballers' Association Awards Ceremony at the Grosvenor Hotel in London.
Tomlinson is a fan of Tottenham Hotspur.
In 2000 it was revealed that she had a relationship with the married footballer Bryan Robson.
- "Tomlinson, Clare (1968- )". Grantham Matters. 16 March 2013. Retrieved 6 May 2014.
- "Judge sentences Max Clifford to EIGHT YEARS in prison for series of sex attacks". Daily Mail. 2 May 2014. Retrieved 4 June 2014.
- Football365.com - F365 Features - Football365 News Archived 9 February 2009 at the Wayback Machine.
- Sale, Charles (13 October 2007). "Stress takes its toll on Tomlinson". Daily Mail. London.
- YouTube - Bywater - Goals On Sunday