[3] He moved to Sydney to work as V8 Supercar pit reporter for Network Ten, when he caught the eye of television producer Adam Boland.

Boland saw the potential in Denyer and offered him full-time position as the weather presenter on the relaunched Sunrise program from 2004 until the end of 2006.

Denyer left this position in December 2006 due to wanting to spend more time with his family, though he remained as a roving reporter for the breakfast program Sunrise.

Denyer won the fourth series of Dancing with the Stars and also hosted the celebrity duet singing competition It Takes Two from 2006 to 2008.

He has also presented All Time Greatest Aussie Bloopers, Guinness World Records with co-host Shelley Craft and Australia's Got Talent.

In January 2010, Denyer returned to Sunrise as weather presenter, succeeding Fifi Box who became Entertainment editor.

On 29 November 2013, Denyer resigned due to 'family reasons' and he was replaced by Weekend Sunrise sports presenter Simon Reeve.

[9] In 2014, Denyer joined Network Ten as the host of a revived version of game show Family Feud.

[15] In the second leg of the race in Agra, India, he collapsed due to the extreme heat, reaching 45 °C (113 °F).

He had to be driven to the pit stop for that leg of the race after all other racers had finished, and was subsequently bedridden for seven weeks afterwards.

He speculated this was due to his severe mould allergy, as one of the challenges involved handling cow manure.

[26] Denyer drove a Ford Falcon in the Fujitsu V8 Supercar series for Speed FX Racing with Michael Caruso and Daniel Elliot.

Denyer's Bathurst 1000 co-driver was Cam Waters, winning the competition beating runner-up British racing driver Andrew Jordan.

[34] After practising a jump over five cars in the truck, Denyer removed his foot too soon from the accelerator which caused the vehicle to land heavily; his lower vertebrae was broken in eight places.

[34][35] Denyer was then moved into intensive care, but there were no signs of any nerve damage or serious injuries, so he was back on the air to host Australia's Got Talent in 2009; however, he did not return to It Takes Two in May.

[36] On the Triple M show The Grill Team, on which Denyer was a guest, Johns recounted about how he tried playing the board game Test Match with his children.

[38] Denyer's 2018 Gold Logie win has proved controversial with people (including Russell Crowe) believing he only won because of Tom Gleeson's campaign.