She was previously co-host of the Seven Network's breakfast television program Sunrise from 2002 to 2013 alongside David Koch[2] and host and senior correspondent of Sunday Night.

Doyles started her career, when she gained a cadetship at WIN Television's Canberra bureau in 1990, later becoming their weather presenter.

Doyle was one of the original hosts of the breakfast television program Sunrise before it was axed in 1999, before being resurrected in 2000, and which she rejoined in 2002.

Doyle returned to Seven from maternity leave in a variety of news and presenting roles before being asked to front a revamped Sunrise program with Chris Reason, who was later replaced by David Koch.

Together, Doyle and Koch under the guidance of Executive producer Adam Boland, surpassed their incumbent opposition and market leaders, Today on the Nine Network.

But Sunrise, as well as a number of other news outlets, including the Sunday Herald Sun and Today Tonight, allegedly identified him and the journalists/presenters were charged with contempt of court.

The journalists and presenters/hosts were all acquitted but the Seven Network, its news director, Today Tonight's executive producer and the Sunday Herald Sun and its editor-in-chief were convicted.

In August 2016, it was announced that Doyle would move into a new expanding role as host and senior correspondent on Sunday Night.

[12] In October 2019, Sunday Night was cancelled and it was announced Doyle would remain with the Seven Network in a variety of news reading roles.

[15] In October 2007, Doyle's first book, The Working Mothers Survival Guide (co-written with Jo Scard), was published by Allen & Unwin.

Doyle previously wrote a weekly column in Australia's highest selling newspaper, the Sunday Herald Sun in Melbourne called "Balancing Act".

In March 2021, Doyle joined Sky News Australia for a special assignment to interview Kylie Moore-Gilbert, an Australian academic convicted and imprisoned in Iran for spying.

In 2024, Doyle appeared in episode 6, season 15 of documentary reality genealogy series Who Do You Think You Are?, tracing her family tree back to New Zealand.

Doyle was appointed a Member of the Order of Australia in 2016 for significant service to the community through representational roles with a range of charitable groups, and to the broadcast media.