Former ABC presenter Andrew Muirhead is to plead guilty in a long-running child pornography case, a court heard today.

Muirhead, 35, was charged in 2010 with using the internet for child pornography and possessing child-exploitation material.

The former host of the popular TV series The Collectors entered not guilty pleas, maintained through a series of appearances and preliminary hearings.

But the Tasmanian Supreme Court today heard his counsel, Kim Baumeler, agree that guilty pleas would be entered after a dispute was resolved over the number of images involved in the case.