Speaking at the HD Masters Conference in London, Nagler confirmed that more HD programmes are on the way.
"In the coming months Dragon's Den, Countryfile, The Culture Show, Shooting Stars, The Restaurant, Waterloo Road, Ashes to Ashes, Hole in the Wall and Flog It! are already committed to making the move," she says.
"I am confident that this year we will increase the total number of hours of content that the BBC is making in HD by more than 300, and I do not intend that we should stop there."
Nagler went on to say that users will be able to access all of this content on Freesat, Freeview and iPlayer, as well as Sky and Virgin Media, in an attempt to make high-definition TV accessible to all.