Youdale trained as a choreographer before joining Gladiators at the age of 22. She left the show in 1996 after sustaining a neck injury on the show. She then co-hosted the final original series of Finders Keepers with Neil Buchanan in 1996, and in the same year, was the hostess on You Bet!, with Darren Day.

On 2 July 2008 it was announced that Sky have plans to do several years of the revival of hit show Gladiators. Diane Youdale, following an interview with Loaded magazine quotes that “Sky reckon they’re going to run it for three to four years so I’ve said to them why not wait until the last ever episode and then I make my comeback then?” she commented. However that will all depend on how well the show does in the ratings.